US3322730A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for producing water insoluble polymers of n-vinyl imides
Assignee: GAF Chemicals Corp
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Filing: 1963-10-23
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Granted: 1967-05-30
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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
2026-11-04 17:12
CPC Classifications
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Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
32 words
AN IMPROVED METHOD FOR THE POLYMERIZATION OF N-VINYL IMIDES TO PRODUCE POLYMERS THEREOF WHICH ARE NOT SOLUBLE IN WATER, WHICH COMPRISES HEATING A MIXTURE COMPRISING AN N-VINYL IMIDE CORRESPONDING TO THE FORMULA
Claim 2
Dependent Claim
32 words
AN IMPROVED METHOD FOR THE POLYMERIZATION OF N-VINYL IMIDES TO PRODUCE POLYMERS THEREOF WHICH ARE NOT SOLUBLE IN WATER, WHICH COMPRISES HEATING A MIXTURE COMPRISING AN N-VINYL IMIDE CORRESPONDING TO 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) | 1970-05-29 | 1970-11-28 | 1971-05-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-05-29 | 1974-11-28 | 1975-05-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-05-29 | 1978-11-28 | 1979-05-30 | $7700.00 | Window Closed / Lapsed |