Patent US3720541A successfully refreshed from Google Patents.
US3720541A
Expired / Lapsed
US
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Transparent articles
Assignee: Pilkington Automotive Ltd
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Filing: 1970-11-12
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Granted: 1973-03-13
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Expires: 1990-11-12
Abstract
Abstract An electrically conductive transparent article comprises a transparent base coated with a first layer of metallic compound, a film of electrically conductive material, a second layer of metallic compound, a third layer of metallic compound, and a final protective layer of a siliceous compound. The third layer comprises a metallic compound which is different from that of the second layer and serves to isolate the first and second layers of metallic compound and the film of electrically conductive material from the surface coating of siliceous compound. Preferably the article has a glass base to which is applied in succession, a layer of bismuth oxide, a film of gold, a layer of bismuth oxide, a layer of copper oxide, and a final surface layer of silica.
Inventors
- 👤 R King
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:41
CPC Classifications
C; C03; C03C; C03C17/00; C03C17/34; C03C17/36; C03C17/3602; C03C17/3618; C03C17/3411; C03C17/3417; C03C17/3644; C03C17/3649; C03C17/3655; C03C17/3668; C03C17/3673; H; H01; H01B; H01B1/00; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24942; Y10T428/2495; Y10T428/24967; Y10T428/24975
Claims Analysis
Total Claims: 25
Claim 1
Independent Claim
138 words
In an electrically conductive transparent article including a transparent base, a first transparent layer of metal oxide applied directly to one surface of said base, a transparent film of electrically conductive metal applied to said first layer, a second transparent layer of metal oxide applied to said film of metal, said first and second layers and said film being susceptible to optical and mechanical degradation incidental to the electrically-induced thermal evaporation deposition of a protective layer of a siliceous compound, a third transparent layer of metal oxide applied to said second layer, the metal oxide of said third layer being different from the metal oxide of said second layer and being of a composition to prevent the aforesaid optical and mechanical degradation, and a protective layer of siliceous compound deposited on said third layer by electrically-induced thermal evaporation.
Claim 2
Dependent Claim
138 words
In an electrically conductive transparent article including a transparent base, a first transparent layer of metal oxide applied directly to one surface of said base, a transparent film of electrically conductive metal applied to said first layer, a second transparent layer of metal oxide applied to said film of metal, said first and second layers and said film being susceptible to optical and mechanical degradation incidental to the electrically-induced thermal evaporation deposition of a protective layer of a siliceous compound, a third transparent layer of metal oxide applied to said second layer, the metal oxide of said third layer being different from the metal oxide of said second layer and being of a composition to prevent the aforesaid optical and mechanical degradation, and a protective layer of siliceous compound deposited on said third layer by electrically-induced thermal evaporation.
Claim 3
Dependent Claim
15 words
An article according to claim 1, wherein said third transparent layer is of copper oxide.
Claim 4
Dependent Claim
15 words
An article according to claim 1, wherein said third transparent layer is of aluminum oxide.
Claim 5
Dependent Claim
15 words
An article according to claim 1, wherein said third transparent layer is of gold oxide.
Claim 6
Dependent Claim
56 words
An electrically conductive transparent article according to claim 1, wherein said third transparent layer is a layer of copper oxide, and said protective layer of siliceous compound consists of a reactively diode sputtered layer of silica on said copper oxide layer and a radio frequency sputtered layer of silica on said reactively diode sputtered silica layer.
Claim 7
Dependent Claim
14 words
An article according to claim 1, wherein the transparent base is a vitreous body.
Claim 8
Independent Claim
125 words
A method of manufacturing an electrically conductive transparent article comprising: a. coating a surface of a transparent base with a first transparent layer of metal oxide; b. applying a transparent electrically conductive metal film to said first layer of metal oxide; c. applying a second transparent layer of metal oxide to said metal film; d. applying to said second metal oxide layer a third transparent layer of a metal oxide different from the oxide of said first and second transparent layers and of a composition to prevent optical and mechanical degradation incidental to subsequent electrically-induced thermal evaporation deposition of a protective layer of a siliceous compound; and e. applying by electrically-induced thermal evaporation a final protective layer of siliceous compound to said third transparent layer.
Claim 9
Independent Claim
125 words
A method of manufacturing an electrically conductive transparent article comprising: a. coating a surface of a transparent base with a first transparent layer of metal oxide; b. applying a transparent electrically conductive metal film to said first layer of metal oxide; c. applying a second transparent layer of metal oxide to said metal film; d. applying to said second metal oxide layer a third transparent layer of a metal oxide different from the oxide of said first and second transparent layers and of a composition to prevent optical and mechanical degradation incidental to subsequent electrically-induced thermal evaporation deposition of a protective layer of a siliceous compound; and e. applying by electrically-induced thermal evaporation a final protective layer of siliceous compound to said third transparent layer.
Claim 10
Dependent Claim
14 words
A metHod according to claim 7, wherein said transparent base is a vitreous substrate.
Claim 11
Dependent Claim
15 words
A method according to claim 8, wherein said third transparent layer is of copper oxide.
Claim 12
Dependent Claim
15 words
A method according to claim 8, wherein said third transparent layer is of aluminum oxide.
Claim 13
Dependent Claim
15 words
A method according to claim 8, wherein said third transparent layer is of gold oxide.
Claim 14
Independent Claim
164 words
A method of manufacturing an electrically conductive transparent article comprising: a. coating a surface of a vitreous substrate with a first transparent layer of metal oxide; b. applying a transparent electrically conductive metal film to said first layer of metal oxide; c. applying a second transparent layer of metal oxide to said metal film; d. applying to said second metal oxide layer a third transparent layer of a metal oxide different from the oxide of said first and second transparent layers and of a composition to prevent optical and mechanical degradation incidental to subsequent electrically-induced thermal evaporation deposition of a protective layer of a siliceous compound; e. reactively diode sputtering a layer of silica on to the layer of step (d); f. heat treating the coated substrate up to a maximum temperature of 240* C to stabilize the electrical resistance of layers of steps (a), (b) and (c); and g. finally radio frequency sputtering a layer of silica on the layer of step (e).
Claim 15
Independent Claim
164 words
A method of manufacturing an electrically conductive transparent article comprising: a. coating a surface of a vitreous substrate with a first transparent layer of metal oxide; b. applying a transparent electrically conductive metal film to said first layer of metal oxide; c. applying a second transparent layer of metal oxide to said metal film; d. applying to said second metal oxide layer a third transparent layer of a metal oxide different from the oxide of said first and second transparent layers and of a composition to prevent optical and mechanical degradation incidental to subsequent electrically-induced thermal evaporation deposition of a protective layer of a siliceous compound; e. reactively diode sputtering a layer of silica on to the layer of step (d); f. heat treating the coated substrate up to a maximum temperature of 240* C to stabilize the electrical resistance of layers of steps (a), (b) and (c); and g. finally radio frequency sputtering a layer of silica on the layer of step (e).
Claim 16
Dependent Claim
96 words
An electrically conductive transparent article comprising: a. a vitreous base; b. a first transparent layer of bismuth oxide applied directly to a surface of the base; c. a transparent gold film applied to said first bismuth oxide layer; d. a second transparent layer of bismuth oxide applied to said gold film; e. a transparent layer of copper oxide applied to said second bismuth oxide layer to protect said bismuth oxide layers and gold film during subsequent sputtering of a protective silica layer; and f. a protective layer of silica sputtered on to the copper oxide layer.
Claim 17
Dependent Claim
96 words
An electrically conductive transparent article comprising: a. a vitreous base; b. a first transparent layer of bismuth oxide applied directly to a surface of the base; c. a transparent gold film applied to said first bismuth oxide layer; d. a second transparent layer of bismuth oxide applied to said gold film; e. a transparent layer of copper oxide applied to said second bismuth oxide layer to protect said bismuth oxide layers and gold film during subsequent sputtering of a protective silica layer; and f. a protective layer of silica sputtered on to the copper oxide layer.
Claim 18
Independent Claim
145 words
A method of manufacturing an electrically conductive glass article comprising: a. coating a surface of a glass substrate with a first transparent layer of bismuth oxide; b. applying a transparent electrically conductive gold film to said first bismuth oxide layer; c. applying a second transparent layer of bismuth oxide to said gold film; d. applying a layer of copper oxide to said second bismuth oxide layer to protect said bismuth oxide layers and gold film during subsequent sputtering of a protective silica layer; e. reactively diode sputtering a bonding layer of silica on to the copper oxide layer; f. then heat treating the coated glass substrate up to a maximum temperature of 240* C to stabilize the electrical resistance of the gold film and the bismuth oxide layers; and g. finally radio frequency sputtering a protective insulating layer of silica on said bonding silica layer.
Claim 19
Independent Claim
145 words
A method of manufacturing an electrically conductive glass article comprising: a. coating a surface of a glass substrate with a first transparent layer of bismuth oxide; b. applying a transparent electrically conductive gold film to said first bismuth oxide layer; c. applying a second transparent layer of bismuth oxide to said gold film; d. applying a layer of copper oxide to said second bismuth oxide layer to protect said bismuth oxide layers and gold film during subsequent sputtering of a protective silica layer; e. reactively diode sputtering a bonding layer of silica on to the copper oxide layer; f. then heat treating the coated glass substrate up to a maximum temperature of 240* C to stabilize the electrical resistance of the gold film and the bismuth oxide layers; and g. finally radio frequency sputtering a protective insulating layer of silica on said bonding silica layer.
Claim 20
Dependent Claim
53 words
A method according to claim 14, comprising sputtering on to said copper oxide layer a bonding layer of silica of thickness in the range 30 to 200 Angstrom units, and finally sputtering on to said bonding layer a protective insulating layer of silica of thickness in the range 1,000 to 50,000 Angstrom units.
Claim 21
Dependent Claim
111 words
An electrically conductive transparent article comprising: a. a vitreous base; b. a first transparent layer of bismuth oxide applied directly to a surface of the base; c. a transparent gold film applied to said first bismuth oxide layer; d. a second transparent layer of bismuth oxide applied to said gold film; e. a transparent layer of copper oxide applied to said second bismuth oxide layer to protect said bismuth oxide layers and gold film during subsequent sputtering of a protective silica layer; f. a reactively diode sputtered layer of silica on the copper oxide layer; and g. a radio frequency sputtered layer of silica on said reactively diode sputtEred silica layer.
Claim 22
Dependent Claim
111 words
An electrically conductive transparent article comprising: a. a vitreous base; b. a first transparent layer of bismuth oxide applied directly to a surface of the base; c. a transparent gold film applied to said first bismuth oxide layer; d. a second transparent layer of bismuth oxide applied to said gold film; e. a transparent layer of copper oxide applied to said second bismuth oxide layer to protect said bismuth oxide layers and gold film during subsequent sputtering of a protective silica layer; f. a reactively diode sputtered layer of silica on the copper oxide layer; and g. a radio frequency sputtered layer of silica on said reactively diode sputtEred silica layer.
Claim 23
Dependent Claim
102 words
An article according to claim 16, wherein the vitreous base is a glass body, said first layer of bismuth oxide has a thickness within the range of 50 to 500 Angstrom units, said gold film has a thickness within the range of 50 to 200 Angstrom units, said second layer of bismuth oxide has a thickness within the range of 50 to 500 Angstrom units, said layer of copper oxide has a thickness within the range of 30 to 2,000 Angstrom units, and said radio frequency sputtered layer of silica has a thickness within the range of 1,000 to 50,000 Angstrom units.
Claim 24
Dependent Claim
75 words
An article according to claim 16, wherein said first layer of bismuth oxide has a thickness of about 300 Angstrom units, said gold film has a thickness of about 100 Angstrom units, said second layer of bismuth oxide has a thickness of about 300 Angstrom units, said layer of copper oxide has a thickness of about 100 Angstrom units, and said radio frequency sputtered layer of silica has a thickness of about 1,500 Angstrom units.
Claim 25
Dependent Claim
26 words
An article according to claim 18, wherein said reactively diode sputtered layer of silica has a thickness within the range of 30 to 200 Angstrom units.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-03-12 | 1976-09-11 | 1977-03-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-03-12 | 1980-09-11 | 1981-03-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-03-12 | 1984-09-11 | 1985-03-13 | $7700.00 | Window Closed / Lapsed |