US3219613A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plasticized polyvinyl alcohol
Assignee: EIDP Inc
•
Filing: 1963-03-21
•
Granted: 1965-11-23
•
Expires: 1983-03-21
Abstract
No abstract record available.
Inventors
- 👤 Frederick J Keene
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:46
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/16; C08K5/315; C08K5/34; C08K5/3412
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
26 words
A COMPOSITION OF MATTER COMPRISING POLYVINYL ALCOHOL ADMIXED WITH FROM ABOUT 5% TO ABOUT 30% N-(2CYANOETHYL) CAPROLACTAM BASED ON TOTAL WEIGHT OF POLYVINYL ALCOHOL AND N-(2-CYANOETHYL)CAPROLACTAM.
Claim 2
Dependent Claim
26 words
A COMPOSITION OF MATTER COMPRISING POLYVINYL ALCOHOL ADMIXED WITH FROM ABOUT 5% TO ABOUT 30% N-(2CYANOETHYL) CAPROLACTAM BASED ON TOTAL WEIGHT OF POLYVINYL ALCOHOL AND N-(2-CYANOETHYL)CAPROLACTAM.
References Cited (Backward Citations)
US2550363A
Cited
US3000843A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-11-22 | 1969-05-24 | 1969-11-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-22 | 1973-05-24 | 1973-11-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-22 | 1977-05-24 | 1977-11-23 | $7700.00 | Window Closed / Lapsed |