US2983996A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Copper-tungsten-molybdenum contact materials
Assignee: Duracell Inc USA
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Filing: 1958-07-30
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Granted: 1961-05-16
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Expires: 1978-07-30
Abstract
No abstract record available.
Inventors
- 👤 Lloyd F Neely
- 👤 Ang Choh-Yi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:03
CPC Classifications
C; C22; C22C; C22C27/00; C22C27/04; B; B23; B23K; B23K35/00; B23K35/22; B23K35/222; H; H01; H01H; H01H1/00; H01H1/02; H01H1/021; H01H1/025; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/923; Y10S428/924; Y10S428/925; Y10S428/9265; Y10S428/929; Y10T; Y10T428/00; Y10T428/12; Y10T428/12014; Y10T428/1216; Y10T428/12174
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
48 words
A METAL COMPOSITION PARTICULARLY SUITABLE FOR ELECTRIC CONTACTS AND PRESSURE EXERTING WELDING ELECTRODES WHICH COMPRISES 28% TO 36% BY WEIGHT OF COPPER, 32% TO 36% BY WEIGHT OF TUNGSTEN, AND 32% TO 36% BY WEIGHT OF MOLYBDENUM, SAID TUNGSTEN AND SAID MOLYDBENUM BEING SUBSTANTIALLY UNALLOYED WITH EACH OTHER.
Claim 2
Dependent Claim
48 words
A METAL COMPOSITION PARTICULARLY SUITABLE FOR ELECTRIC CONTACTS AND PRESSURE EXERTING WELDING ELECTRODES WHICH COMPRISES 28% TO 36% BY WEIGHT OF COPPER, 32% TO 36% BY WEIGHT OF TUNGSTEN, AND 32% TO 36% BY WEIGHT OF MOLYBDENUM, SAID TUNGSTEN AND SAID MOLYDBENUM BEING SUBSTANTIALLY UNALLOYED WITH EACH OTHER.
References Cited (Backward Citations)
US1236384A
Cited
US2851381A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-05-15 | 1964-11-14 | 1965-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-05-15 | 1968-11-14 | 1969-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-05-15 | 1972-11-14 | 1973-05-16 | $7700.00 | Window Closed / Lapsed |