US3459720A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymerization of n-vinyl lactams in presence of azo catalyst and hydroperoxide compound
Assignee: GAF Corp
•
Filing: 1966-05-16
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Granted: 1969-08-05
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Expires: 1986-05-16
Abstract
No abstract record available.
Inventors
- 👤 Frederick Grosser
- 👤 Eugene V Hort
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:10
CPC Classifications
C; C08; C08F; C08F226/00; C08F226/06; C08F226/10; C08F126/00; C08F126/06; C08F126/10; C08F26/00; C08F26/06; C08F26/10; C08L; C08L39/00; C08L39/04; C08L39/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2754245A
Cited
DE1056831B
Cited
US2982762A
Cited
US3133904A
Cited
US3141010A
Cited
US3129210A
Cited
US3414547A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-08-04 | 1973-02-03 | 1973-08-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-08-04 | 1977-02-03 | 1977-08-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-08-04 | 1981-02-03 | 1981-08-05 | $7700.00 | Window Closed / Lapsed |