US2754231A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Impregnated electrical contact brush and method of producing the same
Assignee: Union Carbide Corp
•
Filing: 1953-08-05
•
Granted: 1956-07-10
•
Expires: 1973-08-05
Abstract
No abstract record available.
Inventors
- 👤 Ramadanoff Dimiter
- 👤 Jones Creighton Clinton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 04:23
CPC Classifications
H; H01; H01B; H01B1/00; H01R; H01R39/00; H01R39/02; H01R39/18; H01R39/20; Y; Y10; Y10T; Y10T428/00; Y10T428/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
45 words
AN ELECTRICAL CONTACT BRUSH COMPRISING CARBONACEOUS BRUSH STOCK AND CONTAINING FROM 5% TO 12%, BY WEIGHT, OF A COMPOUND OF AN ALKALINE EARTH METAL BONDED THEREIN AND THERETO BY A COKED RESIN, AND CONTAINING FROM 0.5% TO 10%, BY WEIGHT, OF A WATER-INSOLUBLE SILVER COMPOUND.
Claim 2
Dependent Claim
45 words
AN ELECTRICAL CONTACT BRUSH COMPRISING CARBONACEOUS BRUSH STOCK AND CONTAINING FROM 5% TO 12%, BY WEIGHT, OF A COMPOUND OF AN ALKALINE EARTH METAL BONDED THEREIN AND THERETO BY A COKED RESIN, AND CONTAINING FROM 0.5% TO 10%, BY WEIGHT, OF A WATER-INSOLUBLE SILVER COMPOUND.
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) | 1959-07-10 | 1960-01-09 | 1960-07-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-07-10 | 1964-01-09 | 1964-07-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-07-10 | 1968-01-09 | 1968-07-10 | $7700.00 | Window Closed / Lapsed |