US3061569A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of reacting a polymeric n-vinyl lactam with a polymeric carboxylic acid and product obtained thereby
Assignee: GAF Chemicals Corp
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Filing: 1958-12-10
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Granted: 1962-10-30
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Expires: 1978-12-10
Abstract
No abstract record available.
Inventors
- 👤 George G Stoner
- 👤 George C Wright
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:00
CPC Classifications
C; C08; C08J; C08J3/00; C08J3/24; C08J3/246; C08L; C08L39/00; C08L39/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
10 words
A PROCESS COMPRISING REACTING APOLYMERIC N-VINYL LACTAM HAVING THE FORMULA
Claim 2
Dependent Claim
10 words
A PROCESS COMPRISING REACTING APOLYMERIC N-VINYL LACTAM HAVING THE FORMULA
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-10-29 | 1966-04-30 | 1966-10-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-10-29 | 1970-04-30 | 1970-10-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-10-29 | 1974-04-30 | 1974-10-30 | $7700.00 | Window Closed / Lapsed |