US3158469A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical contact
Assignee: Stackpole Carbon Co
•
Filing: 1962-08-08
•
Granted: 1964-11-24
•
Expires: 1982-08-08
Abstract
No abstract record available.
Inventors
- 👤 John C Kosco
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 19:30
CPC Classifications
C; C22; C22C; C22C32/00; C22C32/0047; C22C32/0052; C22C29/00; C22C29/02; C22C29/06; C22C29/067; H; H01; H01H; H01H1/00; H01H1/02; H01H1/021; H01H1/023; H01H1/0233
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
60 words
AN ELECTRICAL CONTACT MEMBER CONSISTING ESSENTIALLY OF, BY WEIGHT, ABOUT 45 TO 78 PERCENT OF A METAL OF THE GROUP CONSISTING OF SILVER AND COPPER, AND ABOUT 55 TO 22 PERCENT OF A HARD PHASE, SAID HARD PHASE CONSISTING ESSENTIALLY OF TITANIUM CARBIDE OF ABOUT 15.5 TO 18.5 PERCENT OF COMBINED CARBON AND UP TO 3 PERCENT OF FREE CARBON.
Claim 2
Dependent Claim
60 words
AN ELECTRICAL CONTACT MEMBER CONSISTING ESSENTIALLY OF, BY WEIGHT, ABOUT 45 TO 78 PERCENT OF A METAL OF THE GROUP CONSISTING OF SILVER AND COPPER, AND ABOUT 55 TO 22 PERCENT OF A HARD PHASE, SAID HARD PHASE CONSISTING ESSENTIALLY OF TITANIUM CARBIDE OF ABOUT 15.5 TO 18.5 PERCENT OF COMBINED CARBON AND UP TO 3 PERCENT OF FREE CARBON.
References Cited (Backward Citations)
US2313070A
Cited
US2300286A
Cited
US2694007A
Cited
US2765227A
Cited
US2798809A
Cited
GB752361A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-11-24 | 1968-05-25 | 1968-11-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-11-24 | 1972-05-25 | 1972-11-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-11-24 | 1976-05-25 | 1976-11-24 | $7700.00 | Window Closed / Lapsed |