Patent US4228673A successfully refreshed from Google Patents.
Patent US5861189A successfully refreshed from Google Patents.
US5861189A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for producing mirrors by surface activation and pyrolytic deposition
Assignee: Pilkington Group Ltd
•
Filing: 1996-01-11
•
Granted: 1999-01-19
•
Expires: 2016-01-11
Abstract
Abstract A method of producing mirrors comprising depositing a reflecting metal layer by pyrolysis on a ribbon of hot glass during the glass production process characterized by applying to the glass ribbon prior to deposition of the reflecting metal layer a primer for enhancing metal nucleation on the glass. The invention also provides a method of producing mirrors during the glass production process the method comprising pre-treating the surface of a ribbon of hot glass with an activating agent and pyrolytically depositing over the pre-treated surface a reflecting metal layer.
Inventors
- 👤 David William Sheel
- 👤 Joseph Earle Lewis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 01:09
CPC Classifications
C; C03; C03C; C03C17/00; C03C17/34; C03C17/36; C03C17/3602; C03C17/3605; C03C17/06; C03C17/09; C03C17/3618; C03C17/3634; C03C17/3642; C03C17/3657; C03C17/3663; C03C2217/00; C03C2217/70; C03C2217/78
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
41 words
A method of producing mirrors during a float glass production process the method comprising pre-treating a surface of a ribbon of hot float glass with a metal halide activating agent and pyrolytically depositing over the pre-treated surface a reflecting metal layer.
Claim 2
Independent Claim
41 words
A method of producing mirrors during a float glass production process the method comprising pre-treating a surface of a ribbon of hot float glass with a metal halide activating agent and pyrolytically depositing over the pre-treated surface a reflecting metal layer.
Claim 3
Dependent Claim
18 words
A method according to claim 1 wherein the metal halide comprises titanium tetrachloride in a non-oxidising carrier gas.
Claim 4
Dependent Claim
22 words
A method according to claim 1 wherein in the pre-treatment step the glass has a temperature of at least around 170° C.
Claim 5
Dependent Claim
20 words
A method according to claim 1 wherein the pre-treatment step is performed for a period of up to 20 seconds.
Claim 6
Dependent Claim
13 words
A method according to claim 1 wherein the reflecting metal layer comprises aluminium.
Claim 7
Dependent Claim
29 words
A method according to claim 5 wherein the aluminium is deposited from a precursor selected from the group consisting of an alane adduct thereof and an alkyl aluminium hydride.
Claim 8
Dependent Claim
23 words
A method according to claim 6 wherein when the aluminium is deposited the glass has a temperature of at least around 170° C.
Claim 9
Dependent Claim
20 words
A method according to claim 6 wherein the precursor is delivered to the glass surface in a nitrogen gas carrier.
Claim 10
Dependent Claim
35 words
A method according to claim 6 wherein the precursor is an alane adduct of aluminium and is delivered to the glass surface by a coating head which is at a temperature of around 100° C.
Claim 11
Dependent Claim
34 words
A method according to claim 6 wherein the precursor is an alkyl aluminium hydride and is delivered to the glass surface by a coating head which is at a temperature of around 230° C.
Claim 12
Dependent Claim
24 words
A method according to claim 1 further comprising, prior to the pre-treatment step, the step of forming a barrier layer over the glass surface.
Claim 13
Dependent Claim
34 words
A method according to claim 11 wherein the barrier layer is selected from the group consisting of silicon oxide with a proportion of carbon therein, SiO 2 , and Al 2 O 3 .
Claim 14
Dependent Claim
17 words
A method according to claim 11 wherein the barrier layer is from 300 to 700 Angstroms thick.
Claim 15
Dependent Claim
18 words
A method according to claim 1 wherein the reflecting metal layer is from 500 to 700 Angstroms thick.
Claim 16
Dependent Claim
13 words
A method according to claim 1 wherein the activating agent is titanium tetrachloride.
References Cited (Backward Citations)
AU253417B2
Cited
US3656926A
Cited
US3681042A
Cited
GB1507465A
Cited
GB1507996A
Cited
GB1573154A
Cited
FR2436480A1
Cited
JPS60215762A
Cited
US4661381A
Cited
EP0226993A1
Cited
EP0275662A1
Cited
EP0275474A1
Cited
EP0348185A1
Cited
US4923717A
Cited
JPH03126644A
Cited
JPH03218934A
Cited
GB2248853A
Cited
EP0482933A2
Cited
EP0583871A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2002-01-18 | 2002-07-20 | 2003-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2006-01-18 | 2006-07-20 | 2007-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2010-01-18 | 2010-07-20 | 2011-01-19 | $7700.00 | Window Closed / Lapsed |