US2883358A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hard rubber compound containing a mixture of portland cement and petroleum coke as a filler
Assignee: Motors Liquidation Co
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Filing: 1956-10-15
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Granted: 1959-04-21
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Expires: 1976-10-15
Abstract
No abstract record available.
Inventors
- 👤 Donald P Gentry
- 👤 Charles R Shepherd
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 16:59
CPC Classifications
C; C08; C08K; C08K3/00; C08K3/01; C08K3/013
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
92 words
A HARD RUBBER COMPOUND FOR USE IN THE MANUFACTURE OF MOLDED BATTERY CASES, COMPRISING IN COMBINATION ON A WEIGHT BASIS, A RUBBER INGREDIENT SELECTED FROM THE CLASS CONSISTING OF NATURAL RUBBER, BUTADIENE STYRENE, COPOLYMER RUBBER, BUTADIENE ACRYLONITRILE COPOLYMER RUBBER AND COMPATIBLE MIXTURES THEREOF RANGING FROM 60 TO 100 PARTS, A FILLER 200 TO 400 PARTS TOGETHER WITH SUITABLE QUANTITIES OF VULCANIZING AGENTS AND SOFTENERS, SAID FILLER CONSISTING OF A MIXTURE OF PORTLAND CEMENT IN QUANTITIES OF FROM 5 TO 15% TOGETHER WITH GROUND PETROLEUM COKE MAKING UP THE REMAINDER OF THE FILLER.
Claim 2
Dependent Claim
92 words
A HARD RUBBER COMPOUND FOR USE IN THE MANUFACTURE OF MOLDED BATTERY CASES, COMPRISING IN COMBINATION ON A WEIGHT BASIS, A RUBBER INGREDIENT SELECTED FROM THE CLASS CONSISTING OF NATURAL RUBBER, BUTADIENE STYRENE, COPOLYMER RUBBER, BUTADIENE ACRYLONITRILE COPOLYMER RUBBER AND COMPATIBLE MIXTURES THEREOF RANGING FROM 60 TO 100 PARTS, A FILLER 200 TO 400 PARTS TOGETHER WITH SUITABLE QUANTITIES OF VULCANIZING AGENTS AND SOFTENERS, SAID FILLER CONSISTING OF A MIXTURE OF PORTLAND CEMENT IN QUANTITIES OF FROM 5 TO 15% TOGETHER WITH GROUND PETROLEUM COKE MAKING UP THE REMAINDER OF THE FILLER.
References Cited (Backward Citations)
US1940528A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-04-20 | 1962-10-20 | 1963-04-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-04-20 | 1966-10-20 | 1967-04-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-04-20 | 1970-10-20 | 1971-04-21 | $7700.00 | Window Closed / Lapsed |