US3584080A
Expired / Lapsed
US
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Vulcanizable compositions comprising copolymers of an isoolefin and an aromatic divinyl compound
Assignee: Polysar Ltd
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Filing: 1969-02-11
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Granted: 1971-06-08
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Expires: 1989-02-11
Abstract
Abstract VULCANIZABLE COMPOSITIONS COMPRISE A COPOLYMER OF AN ISOLEFIN, AN AROMATIC DIVINYL COMPOUND AND, OPTIONALLY, AN ALIPHATIC DIENE, TOGETHER WITH A FREE-RADICAL CURING AGENT. THE COMPOSITIONS PREFERABLY COMPRISE ALSO A POLYMER, SUCH AS POLYETHYLENE, ETHYLENE/VINYL ACETATE COPOLYMERS, NATURAL RUBBER OR SYNTHETIC RUBBERS VULCANIZABLE BY FREE-RADICAL CURING AGENTS.
Inventors
- 👤 John Walker
- 👤 Ronald Hindmarch Mceuan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 05:47
CPC Classifications
C; C08; C08L; C08L21/00; C08L23/00; C08L23/02; C08L23/04; C08L23/06; C08L23/18; C08L23/20; C08L23/22; C08K; C08K5/00; C08K5/04; C08K5/14; C08L23/08; C08L23/0846; C08L23/0853; C08L23/16; C08L2312/00; C08L53/00; C08L53/02
Claims Analysis
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-06-07 | 1974-12-07 | 1975-06-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-07 | 1978-12-07 | 1979-06-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-07 | 1982-12-07 | 1983-06-08 | $7700.00 | Window Closed / Lapsed |