US3501415A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Metal allyl catalyst for homo- and copolymerizing olefinically unsaturated compounds
Assignee: Hoechst AG
•
Filing: 1966-03-04
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Granted: 1970-03-17
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Expires: 1986-03-04
Abstract
No abstract record available.
Inventors
- 👤 Walter Herwig
- 👤 Albert Gustav Martin Gumboldt
- 👤 Klaus Weissermel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 13:27
CPC Classifications
C; C08; C08F; C08F36/00; C08F36/02; C08F36/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3379706A
Cited
US3398168A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-03-16 | 1973-09-15 | 1974-03-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-03-16 | 1977-09-15 | 1978-03-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-03-16 | 1981-09-15 | 1982-03-17 | $7700.00 | Window Closed / Lapsed |