US3598796A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cyclopentene polymer production
Assignee: Bayer AG
•
Filing: 1969-02-07
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Granted: 1971-08-10
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Expires: 1989-02-07
Abstract
Abstract PRODUCTION OF POLYMERS OF CYCLOPENTENE IN SOLVENT SOLU TION BY THE ADDITION OF CATALYST COMPONENTS COMPRISING TUNGSTEN HEXACHLORIDE, CYCLOPENTENE-HYDROPEROXIDE AND ALUMINUM ALKYL OR ALUMINUM AKYL HALIDE, SAID ALUMINUM ALKYL OR ALUMINUM ALKYL HALIDE BEING ADDED AFTER THE ADDITIONS OFF TUNGSTEN HEXACHLORIDE AND CYCLOPENTENE-2HYDROPEROXIDE AND FOLLOWING A CHANGE IN SOLVENT SOLUTION COLOR.
Inventors
- 👤 Karl Nutzel
- 👤 Friedrich Haas
- 👤 Karl Dinges
- 👤 Wilhelm Graulich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 11:49
CPC Classifications
C; C08; C08G; C08G61/00; C08G61/02; C08G61/04; C08G61/06; C08G61/08; C08F; C08F32/00; Y; Y10; Y10S; Y10S526/00; Y10S526/907
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) | 1974-08-09 | 1975-02-08 | 1975-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-09 | 1979-02-08 | 1979-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-09 | 1983-02-08 | 1983-08-10 | $7700.00 | Window Closed / Lapsed |