US4618088A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for soldering a current connecting element and a current feed conductor of a heatable glass pane
Assignee: Saint Gobain Vitrage SA
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Filing: 1984-12-07
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Granted: 1986-10-21
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Expires: 2004-12-07
Abstract
Abstract A process for improving the solderability of a layer of a silver frit burnt onto a glass pane and a current connecting element wherein a layer of enamel is disposed and the surface of soldering and the glass pane. According to the process the surface is treated with a fluorine containing etching agent prior to soldering. The fluorine containing etching agent may be an aqueous solution of an acid fluoride, such as ammonium hydrogen fluoride or alkali hydrogen fluoride.
Inventors
- 👤 Heinz Karla
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 13:03
CPC Classifications
H; H01; H01R; H01R43/00; H01R43/02; B; B23; B23K; B23K1/00; B23K1/20; B23K1/203; B23K2101/00; B23K2101/36; B23K2101/40
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
94 words
A process for soldering a current connecting element to an enamel-like, electrically conducting layer burnt onto a surface of a glass pane, said electrically conducting layer being disposed on an enamel-like layer which is, in turn, located between the surface of the glass pane and the electrically conducting layer, said process characterized in treating the surface of the electrically conducting layer with a fluorine containing etching agent, said treatment being at the place provided for soldering, and soldering a foot of the current connecting element to said electrically conducting layer at said treated surface.
Claim 2
Dependent Claim
94 words
A process for soldering a current connecting element to an enamel-like, electrically conducting layer burnt onto a surface of a glass pane, said electrically conducting layer being disposed on an enamel-like layer which is, in turn, located between the surface of the glass pane and the electrically conducting layer, said process characterized in treating the surface of the electrically conducting layer with a fluorine containing etching agent, said treatment being at the place provided for soldering, and soldering a foot of the current connecting element to said electrically conducting layer at said treated surface.
Claim 3
Dependent Claim
19 words
The process of claim 1 wherein the fluorine containing etching agent is an aqueous solution of an acid fluoride.
Claim 4
Dependent Claim
25 words
The process of claim 2 wherein the aqueous solution of an acid fluoride is one of an alkali hydrogen fluoride and an ammonium hydrogen fluoride.
Claim 5
Dependent Claim
22 words
The process of claim 3 wherein the aqueous solution of an acid fluoride comprises an approximately 10% aqueous solution of ammonium fluoride.
Claim 6
Dependent Claim
23 words
The process of one of the claims 1 to 4 wherein a stamp is wetted or saturated with the fluorine containing etching agent.
Claim 7
Dependent Claim
22 words
The process of claim 5 wherein said enamel-like electrically conducting layer comprises a current feed conductor of an electrically heatable glass pane.
References Cited (Backward Citations)
FR70771E
Cited
US3271851A
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US3734698A
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US3874069A
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US3895218A
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US4055458A
Cited
US4388522A
Cited
US4525250A
Cited
US4453669A
Cited
US4475682A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-10-20 | 1990-04-21 | 1990-10-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-10-20 | 1994-04-21 | 1994-10-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-10-20 | 1998-04-21 | 1998-10-21 | $7700.00 | Window Closed / Lapsed |