Patent US3816097A successfully refreshed from Google Patents.
US3816097A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Powders of metal, silver and gold
Assignee: OI Glass Inc
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Filing: 1972-06-08
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Granted: 1974-06-11
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Expires: 1992-06-08
Abstract
Abstract A substantially homogeneous, finely divided powder, substantially free of silver chloride or cyanide comprising at least one metal other than silver or gold, and silver and gold, and an anti-agglomerating agent substantially homogeneously dispersed throughout said powder. The powders are particularly useful in the electronic arts.
Inventors
- 👤 V Daiga
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:08
CPC Classifications
B; B22; B22F; B22F9/00; B22F9/16; B22F9/18; B22F9/24
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
18 words
A powder according to claim 1 wherein said powder has a particle size less than about 5 microns.
Claim 2
Dependent Claim
23 words
A powder according to claim 1 wherein said at least one metal is selected from palladium, rhodium, iridium, ruthenium, indium, and mixtures thereof.
Claim 3
Dependent Claim
17 words
A powder according to claim 1 wherein said at least one metal is the single metal palladium.
Claim 4
Dependent Claim
16 words
A powder according to claim 1 wherein said anti-agglomerating agent is particulate silica submicron in size.
Claim 5
Dependent Claim
40 words
A powder according to claim 1 consisting essentially of about: 5-95% by weight palladium, 5-95% by weight of an admixture of gold and silver in a weight ratio of about 4:1 - 1:4, and about 0.5-15% by weight anti-agglomerating agent.
Claim 6
Dependent Claim
35 words
A powder according to claim 1 which consists of about 20-65% by weight palladium, about 80-35% by weight of said silver, gold admixture, and about 5% of submicron particle size silica as said anti-agglomerating agent.
Claim 7
Dependent Claim
33 words
A powder according to claim 1 consisting of by weight about: 52% Ag, 35% Pd, and 13% Au on a metal basis, the total composition including about 5% by weight of said silica.
Claim 8
Dependent Claim
20 words
A powder according to claim 1 wherein said palladium is indicated as alloyed with said silver by X-ray diffraction techniques.
References Cited (Backward Citations)
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US3141761A
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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) | 1977-06-10 | 1977-12-10 | 1978-06-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-10 | 1981-12-10 | 1982-06-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-10 | 1985-12-10 | 1986-06-11 | $7700.00 | Window Closed / Lapsed |