US2991268A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Curable composition of polyethylene, di-alpha-cumyl peroxide, carbon black, coal dust and cured product thereof
Assignee: General Electric Co
•
Filing: 1959-02-20
•
Granted: 1961-07-04
•
Expires: 1979-02-20
Abstract
No abstract record available.
Inventors
- 👤 Martin J Langan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 19:39
CPC Classifications
C; C08; C08K; C08K3/00; C08K3/02; C08K3/04; C08K5/00; C08K5/04; C08K5/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
41 words
A CURABLE COMPOSITION COMPRISING 15% TO 30% BY WEIGHT OF POLYETHYLENE, 30% TO 50% BY WEIGHT OF CARBON BLACK, 0.3% TO 3% BY WEIGHT OF DI-A-CUMYL PEROXIDE, AND THE BALANCE TO A TOTAL WEIGHT PERCENTAGE OF 100% CONSISTING OF COAL DUST.
Claim 2
Dependent Claim
41 words
A CURABLE COMPOSITION COMPRISING 15% TO 30% BY WEIGHT OF POLYETHYLENE, 30% TO 50% BY WEIGHT OF CARBON BLACK, 0.3% TO 3% BY WEIGHT OF DI-A-CUMYL PEROXIDE, AND THE BALANCE TO A TOTAL WEIGHT PERCENTAGE OF 100% CONSISTING OF COAL DUST.
References Cited (Backward Citations)
US2445312A
Cited
US2888424A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-07-03 | 1965-01-02 | 1965-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-07-03 | 1969-01-02 | 1969-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-07-03 | 1973-01-02 | 1973-07-04 | $7700.00 | Window Closed / Lapsed |