US4826525A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of coating glass for reheating
Assignee: Pilkington Group Ltd
•
Filing: 1988-07-25
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Granted: 1989-05-02
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Expires: 2008-07-25
Abstract
Abstract A bent and/or toughened coated glass is produced by subjecting glass having a coating comprising at least one metal having an atomic number of 22 to 29 and a thin layer of aluminium applied over said coating to a bending and/or toughening cycle in which the coated glass is heated to a temperature above the softening point of the glass. The invention is useful for the production of bent and/or toughened solar control glasses, low emissivity glasses (when the metal used is copper) and mirrors.
Inventors
- 👤 Peter Chesworth
- 👤 Martin Lowe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:07
CPC Classifications
C; C03; C03C; C03C17/00; C03C17/34; C03C17/36; C03C17/3602; C03C17/3605; C03B; C03B23/00; C03B23/02; C03B23/023; C03B27/00; C03B27/04; C03B27/052; C03C17/3411; C03C17/3429; C03C17/3435; C03C17/3615; C03C17/3626; C03C17/3649; C03C17/3652; C03C17/3657; C03C17/366; C03C17/3681; C03C17/3689; C03C17/40
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
67 words
A method for the production of bent and/or toughened coated glass which comprises providing glass having a coating comprising at least one metal having an atomic number of 22 to 29 and a thin layer of aluminium applied over said coating, and subjecting the coated glass to a bending and/or toughening cycle in which it is heated to a temperature above the softening point of the glass.
Claim 2
Independent Claim
67 words
A method for the production of bent and/or toughened coated glass which comprises providing glass having a coating comprising at least one metal having an atomic number of 22 to 29 and a thin layer of aluminium applied over said coating, and subjecting the coated glass to a bending and/or toughening cycle in which it is heated to a temperature above the softening point of the glass.
Claim 3
Dependent Claim
14 words
A method according to claim 1 wherein the coating is a solar control coating.
Claim 4
Dependent Claim
22 words
A method according to claim 1 wherein the coating comprises at least one metal having an atomic number of 22 to 28.
Claim 5
Dependent Claim
17 words
A method according to claim 2 wherein the solar control coating comprises a layer of stainless steel.
Claim 6
Dependent Claim
17 words
A method according to claim 2 wherein the solar control coating comprises a layer of titanium nitride.
Claim 7
Dependent Claim
12 words
A method according to claim 1 wherein the coating is of copper.
Claim 8
Dependent Claim
19 words
A method according to claim 1 wherein the coating is of chromium, chromium nickel alloy, stainless steel or titanium.
Claim 9
Dependent Claim
26 words
A method according to claim 7 wherein the coating is a mirror coating such that the coated glass has a light transmission of less than 1%.
Claim 10
Dependent Claim
33 words
A method according to claim 1 wherein the aluminium is applied over said coating in an amount equivalent to an aluminium layer having a thickness in the range 10 nm to 40 nm.
Claim 11
Dependent Claim
30 words
A method according to claim 9 wherein the aluminium is applied over said coating in an amount equivalent to an aluminium layer having a thickness of at least 15 nm.
Claim 12
Dependent Claim
30 words
A method according to claim 9 wherein the aluminium is applied over said coating in an amount equivalent to an aluminium layer having a thickness of up to 35 nm.
Claim 13
Dependent Claim
33 words
A method according to claim 9 wherein the aluminium is applied over said coating in an amount equivalent to an aluminium layer having a thickness in the range 10 nm to 20 nm.
Claim 14
Dependent Claim
49 words
A method according to claim 1 wherein the coated glass substrate is of soda lime silica glass which comprises heating the coated glass in air to a temperature in the range 570° C. to 620° C., bending it in a mould of desired curvature, and annealing the bent glass.
Claim 15
Dependent Claim
48 words
A method according to claim 1 wherein the coated glass substrate is of soda lime silica glass which comprises heating the coated glass in air at a temperature in the range 600° C. to 670° C., optionally bending the glass and rapidly cooling the glass to toughen it.
Claim 16
Independent Claim
69 words
A method for the production of bent and/or toughened coated glass which comprises providing glass having a solar control coating comprising at least one metal having an atomic number of 22 to 28 and a thin layer of aluminium applied over said coating, and subjecting the coated glass to a bending and/or toughening cycle in which it is heated to a temperature above the softening point of the glass.
Claim 17
Independent Claim
69 words
A method for the production of bent and/or toughened coated glass which comprises providing glass having a solar control coating comprising at least one metal having an atomic number of 22 to 28 and a thin layer of aluminium applied over said coating, and subjecting the coated glass to a bending and/or toughening cycle in which it is heated to a temperature above the softening point of the glass.
Claim 18
Dependent Claim
33 words
A method according to claim 15 wherein the aluminium is applied over said coating in an amount equivalent to an aluminium layer having a thickness in the range 10 nm to 40 nm.
Claim 19
Dependent Claim
33 words
A method according to claim 15 wherein the aluminium is applied over said coating in an amount equivalent to an aluminium layer having a thickness in the range 10 nm to 20 nm.
Claim 20
Dependent Claim
49 words
A method according to claim 15 wherein the coated glass substrate is of soda lime silica glass which comprises heating the coated glass in air to a temperature in the range 570° C. to 620° C., bending it in a mould of desired curvature, and annealing the bent glass.
Claim 21
Dependent Claim
48 words
A method according to claim 15 wherein the coated glass substrate is of soda lime silica glass which comprises heating the coated glass in air at a temperature in the range 600° C. to 670° C., optionally bending the glass and rapidly cooling the glass to toughen it.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-05-01 | 1992-10-31 | 1993-05-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-05-01 | 1996-10-31 | 1997-05-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-05-01 | 2000-10-31 | 2001-05-02 | $7700.00 | Window Closed / Lapsed |