Patent US3029220A successfully refreshed from Google Patents.
US3029220A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Graft copolymers of monomeric aminoethylacrylates and methacrylates on polyvinyllactams, acrylonitrile polymer compositions obtainable therewith, and method of preparation
Assignee: Dow Chemical Co
•
Filing: 1957-11-25
•
Granted: 1962-04-10
•
Expires: 1977-11-25
Abstract
No abstract record available.
Inventors
- 👤 Stanley A Murdock
- 👤 Clyde W Davis
- 👤 Forrest A Ehlers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 04:49
CPC Classifications
C; C08; C08F; C08F271/00; C08F271/02; C08L; C08L33/00; C08L33/18; C08L33/20; Y; Y10; Y10S; Y10S8/00; Y10S8/18
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
78 words
COMPOSITION COMPRISING A MAJOR PROPORTION OF (1) A FIBER FORMING POLYMER OF AN ETHYLENICALY UNSATURATED MONOMERIC MATERIAL CONTAINING AT LEAST ABOUT 80 PERCENT BY WEIGHT OF ACRYLONITRILE AND (2) A MINOR PROPORTION OF UP TO ABOUT 20 PERCENT BY WEIGHT, BASED ON THE WEIGHT OF THE THE COMPOSITION, OF A GRAFT COPOLYMER OF (A) FROM ABOUT 20 TO 80 PERCENT BY WEIGHT, BASED ON THE WEIGHT OF THE GRAFT COPOLYMER, OF A MONOMERIC AMINOETHYLACRYLATE COMPOUND OF THE FORMULA:
References Cited (Backward Citations)
US2735831A
Cited
US2120933A
Cited
US2418696A
Cited
US2417312A
Cited
DE801746C
Cited
US2614289A
Cited
GB715194A
Cited
US2643990A
Cited
US2776270A
Cited
US2776271A
Cited
US2837496A
Cited
US2821519A
Cited
US2790783A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-04-09 | 1965-10-09 | 1966-04-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-04-09 | 1969-10-09 | 1970-04-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-04-09 | 1973-10-09 | 1974-04-10 | $7700.00 | Window Closed / Lapsed |