US3904782A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method to improve the adherance of metal films deposited on glass sub-strates
Assignee: Duracell Inc USA
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Filing: 1973-11-08
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Granted: 1975-09-09
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Expires: 1993-11-08
Abstract
Abstract Improved adherence of deposited metal upon glass substrates is obtained by applying a potential, with the deposited metal positive and the insulating material negative to such an assembly with the insulating material being at a temperature at which it is slightly conductive.
Inventors
- 👤 Daniel I Pomerantz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 08:21
CPC Classifications
C; C04; C04B; C04B41/00; C04B41/009; C03; C03C; C03C17/00; C03C17/06; C04B41/45; C04B41/50; C04B41/51; C04B41/80; C04B41/81; C04B41/85; C04B41/88; C03C2217/00; C03C2217/20; C03C2217/25; C03C2217/251; C03C2217/252; C03C2217/254; C03C2217/255; C03C2218/00; C03C2218/10; C03C2218/15
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
102 words
IN A METHOD WHEREIN A METAL TAKEN FROM THE CLASS CONSISTING OF GOLD AND ALUMINUM IS DEPOSITED ON A GLASS SUBSTRATE, THE IMPROVEMENT COMPRISING: APPLYING AN ELECTRLICAL POTENTIAL AT A CURRENT DENSITY OF FROM ABOUT 2-8 MICROAMPS PER SQUARE MILLIMETERS ACROSS SAIDD METAL FILM AND SAID GLASS SUBSTRATE SO AS TO RENDER SAID METAL POSITIVE AND SAID GLASS SUBSTRATE NEGATIVE WHILE MAINTAINING AT LEAST SAID GLASS SUBSTRATE AT A TEMPERATURE AT WHICH SAID GLASS SUBSTRATE IS SLIGHTLY CONDUCTIVE FOR A PERIOD OF FROM ABOUT 1 TO 10 MINUTES SO AS TO IMPROVE THE ADHERENCE OF SAID METAL FILM TO SAID GLASS SUBSTRATE.
Claim 2
Dependent Claim
102 words
IN A METHOD WHEREIN A METAL TAKEN FROM THE CLASS CONSISTING OF GOLD AND ALUMINUM IS DEPOSITED ON A GLASS SUBSTRATE, THE IMPROVEMENT COMPRISING: APPLYING AN ELECTRLICAL POTENTIAL AT A CURRENT DENSITY OF FROM ABOUT 2-8 MICROAMPS PER SQUARE MILLIMETERS ACROSS SAIDD METAL FILM AND SAID GLASS SUBSTRATE SO AS TO RENDER SAID METAL POSITIVE AND SAID GLASS SUBSTRATE NEGATIVE WHILE MAINTAINING AT LEAST SAID GLASS SUBSTRATE AT A TEMPERATURE AT WHICH SAID GLASS SUBSTRATE IS SLIGHTLY CONDUCTIVE FOR A PERIOD OF FROM ABOUT 1 TO 10 MINUTES SO AS TO IMPROVE THE ADHERENCE OF SAID METAL FILM TO SAID GLASS SUBSTRATE.
Claim 3
Dependent Claim
18 words
A method according to claim 1 wherein the voltage utilized is from about 50 to about 400 volts.
Claim 4
Dependent Claim
20 words
A method according to claim 1 wherein the deposited layer and the insulating substrate are both heated to said temperature.
Claim 5
Dependent Claim
13 words
A method according to claim 1 wherein said glass is a boro-silicate glass.
Claim 6
Dependent Claim
17 words
A method according to claim 1 wherein the heating temperature is from about 150* to about 1000*C.
Claim 7
Dependent Claim
11 words
A method according to claim 1 wherein said glass is quartz.
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) | 1978-09-08 | 1979-03-10 | 1979-09-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-08 | 1983-03-10 | 1983-09-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-08 | 1987-03-10 | 1987-09-09 | $7700.00 | Window Closed / Lapsed |