US3437716A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for accelerating polymerization of ethylenically unsaturated monomers using trivalent antimony compounds
Assignee: Cosan Chemical Corp
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Filing: 1966-12-13
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Granted: 1969-04-08
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Expires: 1986-12-13
Abstract
No abstract record available.
Inventors
- 👤 John R Leebrick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 07:52
CPC Classifications
C; C08; C08F; C08F299/00; C08F299/02; C08F299/04; C08F299/0442; C08F299/0464
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB837696A
Cited
FR1171729A
Cited
FR1196645A
Cited
DE1130164B
Cited
DE1128663B
Cited
US3373225A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-04-07 | 1972-10-07 | 1973-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-04-07 | 1976-10-07 | 1977-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-04-07 | 1980-10-07 | 1981-04-08 | $7700.00 | Window Closed / Lapsed |