US3033835A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Curing endocyclic ring containing hydrocarbon polymers with sulfur and peroxide
Assignee: Dunlop Rubber Co Ltd
•
Filing: 1960-03-28
•
Granted: 1962-05-08
•
Expires: 1980-03-28
Abstract
No abstract record available.
Inventors
- 👤 Adamek Stephen
- 👤 Dingle Arthur Durwin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 02:43
CPC Classifications
C; C08; C08K; C08K3/00; C08K3/02; C08K3/06; C08K5/00; C08K5/04; C08K5/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
50 words
PROCESS FOR THE PRODUCTION OF CURED SYNTHETIC RUBBER, WHICH COMPRISES HEATING A COMPOSITION CONTAINING A COPOLYMER OF AT LEAST ONE MONO-OLEFINE, AND AN UNSATURATED HYDROCARBON CONTAINING AN ENDOCYCLIC RING, 0.25-4% OF SULPHUR, AND 0.25-2% OF AN ORGANIC PEROXIDE CURING AGENT, BOTH PROPORTION BEING BASED ON THE WEIGHT OF THE COPOLYMER.
Claim 2
Dependent Claim
50 words
PROCESS FOR THE PRODUCTION OF CURED SYNTHETIC RUBBER, WHICH COMPRISES HEATING A COMPOSITION CONTAINING A COPOLYMER OF AT LEAST ONE MONO-OLEFINE, AND AN UNSATURATED HYDROCARBON CONTAINING AN ENDOCYCLIC RING, 0.25-4% OF SULPHUR, AND 0.25-2% OF AN ORGANIC PEROXIDE CURING AGENT, BOTH PROPORTION BEING BASED ON THE WEIGHT OF THE COPOLYMER.
References Cited (Backward Citations)
US2643247A
Cited
US2514198A
Cited
US2809372A
Cited
US2799668A
Cited
US2883372A
Cited
US3000866A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-05-07 | 1965-11-06 | 1966-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-05-07 | 1969-11-06 | 1970-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-05-07 | 1973-11-06 | 1974-05-08 | $7700.00 | Window Closed / Lapsed |