US4050930A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical contact material
Assignee: Sumitomo Electric Industries Ltd
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Filing: 1976-03-16
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Granted: 1977-09-27
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Expires: 1996-03-16
Abstract
Abstract A material for an electrical contact is produced by an internal oxidation of an alloy consisting of 1-15% by weight of indium, 0.5-12% by weight of tin, 0.01-5% by weight of one selected from manganese and molybdenum, and the balance silver. In a modification an iron group element may be mixed in a range less than 0.5% by weight.
Inventors
- 👤 Kenya Motoyoshi
- 👤 Masahiro Kume
- 👤 Yoshinari Amano
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 04:59
CPC Classifications
H; H01; H01H; H01H1/00; H01H1/02; H01H1/021; H01H1/023; H01H1/0237; H01H1/02372; C; C22; C22C; C22C5/00; C22C5/06
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
62 words
An electrical contact material produced by internal oxidation of an alloy consisting of 1-15% by weight of metal indium, 0.5-12% by weight of metal tin, 0.01-5% by weight of one metal selected from the group consisting of manganese and molybdenum, and the balance silver, wherein oxides are formed by said internal oxidation which are spherical in shape and finely and uniformly dispersed.
Claim 2
Dependent Claim
62 words
An electrical contact material produced by internal oxidation of an alloy consisting of 1-15% by weight of metal indium, 0.5-12% by weight of metal tin, 0.01-5% by weight of one metal selected from the group consisting of manganese and molybdenum, and the balance silver, wherein oxides are formed by said internal oxidation which are spherical in shape and finely and uniformly dispersed.
Claim 3
Dependent Claim
63 words
An electrical contact material produced by an internal oxidation of an alloy consisting of 1-15% by weight of metal indium, 3-12% by weight of metal tin, 0.01-5% by weight of one metal selected from the group consisting of manganese and molybdenum, and the balance silver, wherein oxides are formed by said internal oxidation which are spherical in shape and finely and uniformly dispersed.
Claim 4
Dependent Claim
63 words
An electrical contact material produced by an internal oxidation of an alloy consisting of 1-15% by weight of metal indium, 3-12% by weight of metal tin, 0.01-5% by weight of one metal selected from the group consisting of manganese and molybdenum, and the balance silver, wherein oxides are formed by said internal oxidation which are spherical in shape and finely and uniformly dispersed.
Claim 5
Dependent Claim
71 words
An electrical contact material produced by an internal oxidation of an alloy consisting of 1-15% by weight of metal indium, 0.5-12% by weight of metal tin, 0.01-5% by weight of 1 metal selected from the group consisting of manganese molybdenum, less than 0.5% by weight of iron group element, and the balance silver, wherein oxides are formed by said internal oxidation which are spherical in shape and finely and uniformly dispersed.
Claim 6
Dependent Claim
71 words
An electrical contact material produced by an internal oxidation of an alloy consisting of 1-15% by weight of metal indium, 0.5-12% by weight of metal tin, 0.01-5% by weight of 1 metal selected from the group consisting of manganese molybdenum, less than 0.5% by weight of iron group element, and the balance silver, wherein oxides are formed by said internal oxidation which are spherical in shape and finely and uniformly dispersed.
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) | 1980-09-26 | 1981-03-28 | 1981-09-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-09-26 | 1985-03-28 | 1985-09-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-09-26 | 1989-03-28 | 1989-09-27 | $7700.00 | Window Closed / Lapsed |