US3475306A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of halogenated olefin polymers using gaseous phase polymerization in the presence of a carbonyl initiator
Assignee: Ashland LLC
•
Filing: 1967-02-28
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Granted: 1969-10-28
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Expires: 1987-02-28
Abstract
No abstract record available.
Inventors
- 👤 Edwin T Clocker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 21:38
CPC Classifications
C; C08; C08F; C08F14/00; C08F14/18; C08F14/26; C08F4/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2912373A
Cited
US3228865A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-10-27 | 1973-04-28 | 1973-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-10-27 | 1977-04-28 | 1977-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-10-27 | 1981-04-28 | 1981-10-28 | $7700.00 | Window Closed / Lapsed |