US3277066A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Methods of polymerizing n-vinyl lactams with a metal oxide or hydroxide and water catalyst
Assignee: GAF Chemicals Corp
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Filing: 1963-10-23
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Granted: 1966-10-04
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Expires: 1983-10-23
Abstract
No abstract record available.
Inventors
- 👤 Grosser Frederick
- 👤 Eugene V Hort
- 👤 Schwartz Arthur
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 00:47
CPC Classifications
C; C08; C08F; C08F210/00; C08F210/16; C08F8/00; C08F8/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
27 words
AN IMPROVED METHOD FOR THE POLYMERIZATION OF N-VINYL LACTAMS TO PRODUCE INSOLUBLE POLYMERS THEREOF WHICH COMPRISES HEATING A MIXTURE COMPRISING AN N-VINYL LACTAM CORRESPONDING TO THE FORMULA:
Claim 2
Dependent Claim
27 words
AN IMPROVED METHOD FOR THE POLYMERIZATION OF N-VINYL LACTAMS TO PRODUCE INSOLUBLE POLYMERS THEREOF WHICH COMPRISES HEATING A MIXTURE COMPRISING AN N-VINYL LACTAM CORRESPONDING TO THE FORMULA:
References Cited (Backward Citations)
GB931013A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-10-03 | 1970-04-04 | 1970-10-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-03 | 1974-04-04 | 1974-10-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-03 | 1978-04-04 | 1978-10-04 | $7700.00 | Window Closed / Lapsed |