US3962488A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrically conductive coating
Assignee: PPG Industries Inc
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Filing: 1974-08-09
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Granted: 1976-06-08
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Expires: 1994-08-09
Abstract
Abstract An optically clear, electrically conductive, transparent coating on a substrate and a method of coating are disclosed. The coating comprises a first transparent layer deposited as TiO x on the substrate, where x preferably has a value within the range of 1.3 to 1.7, a layer of silver or gold deposited on the first layer, and a third transparent layer deposited as TiO x on the second layer, where x preferably has a value within the range of 1.3 to 1.7. The coating is deposited under vacuum in a partial pressure of oxygen on a rigid transparent substrate such as glass or a flexible plastic substrate and the resultant coated substrate used in electrically heated windows.
Inventors
- 👤 Frank H. Gillery
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 02:28
CPC Classifications
C; C03; C03C; C03C17/00; C03C17/34; C03C17/36; C03C17/3602; C03C17/3613; C03C17/3644; C03C17/3649; C03C17/3652; C03C17/3655; C03C17/3668; C03C17/3673; C03C17/3681; C23; C23C; C23C14/00; C23C14/06; C23C14/08; C23C14/083; C23C14/14; C23C14/18
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
138 words
A method of making a coated article comprising: a. vacuum depositing in a partial pressure of oxygen titanium oxide having the form TiO x where x is from 1.3 to 1.7 on a substrate to form a transparent film having a thickness of from 200 to 500 Angstroms; b. vacuum depositing silver or gold on the previously deposited TiO x film at a rate sufficiently fast to form a transparent continuous metal film having a thickness of from 60 to 250 Angstroms and having a sheet resistance of less than 10 ohms per square, and c. vacuum depositing in a partial pressure of oxygen titanium oxide having the form TiO x where x is from 1.3 to 1.7 on the previously deposited metal film to form a transparent film having a thickness of from 200 to 500 Angstroms.
Claim 2
Independent Claim
138 words
A method of making a coated article comprising: a. vacuum depositing in a partial pressure of oxygen titanium oxide having the form TiO x where x is from 1.3 to 1.7 on a substrate to form a transparent film having a thickness of from 200 to 500 Angstroms; b. vacuum depositing silver or gold on the previously deposited TiO x film at a rate sufficiently fast to form a transparent continuous metal film having a thickness of from 60 to 250 Angstroms and having a sheet resistance of less than 10 ohms per square, and c. vacuum depositing in a partial pressure of oxygen titanium oxide having the form TiO x where x is from 1.3 to 1.7 on the previously deposited metal film to form a transparent film having a thickness of from 200 to 500 Angstroms.
Claim 3
Dependent Claim
19 words
The method of claim 1 in which the TiO x films are deposited from a source of titanium metal.
Claim 4
Dependent Claim
25 words
The method of claim 1 in which the partial pressure of oxygen is within the range of 1.0 to 3.0 × 10 - 4 Torr.
Claim 5
Dependent Claim
19 words
The method of claim 1 in which the coated article has a luminous transmittance of at least 75 percent.
Claim 6
Dependent Claim
19 words
The method of claim 4 in which the coated article has a luminous transmittance of at least 80 percent.
Claim 7
Dependent Claim
23 words
The method of claim 1 in which the substrate is selected from the class consisting of rigid transparent materials and flexible plastic materials.
Claim 8
Dependent Claim
11 words
The method of claim 6 in which the substrate is glass.
Claim 9
Dependent Claim
11 words
The method of claim 6 in which the substrate is polyester.
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) | 1979-06-08 | 1979-12-08 | 1980-06-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-06-08 | 1983-12-08 | 1984-06-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-06-08 | 1987-12-08 | 1988-06-08 | $7700.00 | Window Closed / Lapsed |