US3222331A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sulfur-vulcanizable interpolymers comprising at least on ealpha-olefin and a polyvinylcycloalkane and a process for preparation
Assignee: Shell USA Inc
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Filing: 1962-04-25
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Granted: 1965-12-07
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Expires: 1982-04-25
Abstract
No abstract record available.
Inventors
- 👤 Edward W Duck
- 👤 Berkenbosch Rinke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 02:32
CPC Classifications
C; C08; C08F; C08F210/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
47 words
SULFUR-VULCANIZABLE UNSATURATED ELASTOMERIC RANDOM COPOLYMERS OF AT LEAST ONE TERMINALLY UNSATURATED STRAIGHT CHAIN MONO-OLEFIN CONTAINING 2-6 CARBONATOMS PER MOLECULE AND 2.5-10 MOL PERCENT OF A TRIVINYL MONOCYCLOALKANE, THE CYCLOALKANE RING HAVING 5-6 CARBON ATOMS IN THE RING, THE COPOLYMERS HAVING 2-25 DOUBLE BONDS PER 1,000 CARBON ATOMS.
Claim 2
Dependent Claim
47 words
SULFUR-VULCANIZABLE UNSATURATED ELASTOMERIC RANDOM COPOLYMERS OF AT LEAST ONE TERMINALLY UNSATURATED STRAIGHT CHAIN MONO-OLEFIN CONTAINING 2-6 CARBONATOMS PER MOLECULE AND 2.5-10 MOL PERCENT OF A TRIVINYL MONOCYCLOALKANE, THE CYCLOALKANE RING HAVING 5-6 CARBON ATOMS IN THE RING, THE COPOLYMERS HAVING 2-25 DOUBLE BONDS PER 1,000 CARBON ATOMS.
References Cited (Backward Citations)
DE1065413B
Cited
US2933480A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-12-06 | 1969-06-07 | 1969-12-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-06 | 1973-06-07 | 1973-12-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-06 | 1977-06-07 | 1977-12-07 | $7700.00 | Window Closed / Lapsed |