US3554988A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vulcanizable unsaturated quaterpolymers
Assignee: Huels AG
•
Filing: 1967-08-07
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Granted: 1971-01-12
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Expires: 1987-08-07
Abstract
Abstract RAPIDLY VULCANIZABLE UNSATURATED QUATERPOLYMERS OF TWO 1-OLEFINS, AN ALKYLIDENE OR ALKENYL NORBORNENE AND EITHER HAXADIENE-1,4 OR DICYCLOPENTADIENE ARE PREPARED WITH CATALYSTS FORMED BY MIXING PARTICULAR COMPOUNDS OF ELEMENTS IN MAIN GROUPS I TO III OF THE PERIODIC TABLE WITH COMPOUNDS OF ELEMENTS OF SUBGROUPS IV TO VI OF THE PERIODIC TABLE.
Inventors
- 👤 Hans Emde
- 👤 Gunter Kerrutt
- 👤 Heinrich Weber
- 👤 Harald Blumel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 03:50
CPC Classifications
C; C08; C08F; C08F210/00
Claims Analysis
Total Claims: 0
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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) | 1974-01-11 | 1974-07-13 | 1975-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-11 | 1978-07-13 | 1979-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-11 | 1982-07-13 | 1983-01-12 | $7700.00 | Window Closed / Lapsed |