US4028061A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Silver-cadmium oxide alloys
Assignee: AMI DELAWARE Inc
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Filing: 1976-06-17
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Granted: 1977-06-07
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Expires: 1996-06-17
Abstract
Abstract This application describes the addition of an alkali metal, generally in the form of a salt thereof, to a mixture of silver and cadmium oxide, prior to the sintering step, to improve the as-sintered densities of the resultant alloy material.
Inventors
- 👤 Han J. Kim
- 👤 F. Joseph Reid
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 20:31
CPC Classifications
C; C22; C22C; C22C32/00; C22C32/001; C22C32/0015; C22C32/0021; B; B22; B22F; B22F3/00; B22F3/10; B22F3/1003
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
76 words
An as-sintered, non-cold worked silver cadmium oxide alloy comprising about 70% to about 95% silver about 30% to about 5% cadmium oxide, and a quantity of the thermal decomposition product of from about 0.05% to about 0.5% of an additive selected from the group consisting of the alkali metal and alkaline earth metal salts of nitric acid, said alloy being characterized by an as-sintered density of about 99% of theoretical, and enhanced tensile strength and toughness.
Claim 2
Dependent Claim
76 words
An as-sintered, non-cold worked silver cadmium oxide alloy comprising about 70% to about 95% silver about 30% to about 5% cadmium oxide, and a quantity of the thermal decomposition product of from about 0.05% to about 0.5% of an additive selected from the group consisting of the alkali metal and alkaline earth metal salts of nitric acid, said alloy being characterized by an as-sintered density of about 99% of theoretical, and enhanced tensile strength and toughness.
Claim 3
Dependent Claim
21 words
The alloy of claim 1 wherein said alloy contains about 85% silver and about 85% silver and about 15% cadmium oxide.
References Cited (Backward Citations)
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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) | 1980-06-06 | 1980-12-06 | 1981-06-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-06-06 | 1984-12-06 | 1985-06-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-06-06 | 1988-12-06 | 1989-06-07 | $7700.00 | Window Closed / Lapsed |