US3211709A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sulfur-vulcanizeable interpolymers of at least two alpha-olefins and an unsaturated bridged-ring hydrocarbon
Assignee: Hercules Powder Co
•
Filing: 1958-07-14
•
Granted: 1965-10-12
•
Expires: 1978-07-14
Abstract
No abstract record available.
Inventors
- 👤 Adamek Stephen
- 👤 Dudley Edward Allan
- 👤 Woodhams Raymond Thomas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:22
CPC Classifications
C; C08; C08F; C08F232/00; C08F232/08; C08F210/00; C08F210/16; C08F210/18; C08F210/04; C08F210/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
86 words
A SULFUR-VULCANIZABLE, ELASTOMERIC COPOLYMER OF AT LEAST TWO STRAIGHT CHAIN A-OLEFINS OF FROM 2 TO 10 CARBON ATOMS AND AN ETHYLENICALLY UNSATURATED BRIDGED-RING HYDROCARBON CONTAINING AT LEAST TWO ETHYLENIC DOUBLE BONDS, AT LEAST ONE OF SAID DOUBLE BONDS BEING IN ONE OF THE RINGS OF THE BRIDGED RING PRESENT IN SAID HYDROCARBON, SAID HYDROCARBON BEING PRESENT IN THE COPOLYMER IN AN AMOUNT IMPARTING SULFUR-VULCANIZABILITY, SAID HYDROCARBON HAVING FROM 7 TO 20 CARBON ATOMS, THE TOTAL STRAIGHT CHAIN A-OLEFIN CONTENT OF SAID COPOLYMER BEING AT LEAST 50%.
Claim 2
Dependent Claim
86 words
A SULFUR-VULCANIZABLE, ELASTOMERIC COPOLYMER OF AT LEAST TWO STRAIGHT CHAIN A-OLEFINS OF FROM 2 TO 10 CARBON ATOMS AND AN ETHYLENICALLY UNSATURATED BRIDGED-RING HYDROCARBON CONTAINING AT LEAST TWO ETHYLENIC DOUBLE BONDS, AT LEAST ONE OF SAID DOUBLE BONDS BEING IN ONE OF THE RINGS OF THE BRIDGED RING PRESENT IN SAID HYDROCARBON, SAID HYDROCARBON BEING PRESENT IN THE COPOLYMER IN AN AMOUNT IMPARTING SULFUR-VULCANIZABILITY, SAID HYDROCARBON HAVING FROM 7 TO 20 CARBON ATOMS, THE TOTAL STRAIGHT CHAIN A-OLEFIN CONTENT OF SAID COPOLYMER BEING AT LEAST 50%.
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) | 1968-10-11 | 1969-04-12 | 1969-10-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-11 | 1973-04-12 | 1973-10-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-11 | 1977-04-12 | 1977-10-12 | $7700.00 | Window Closed / Lapsed |