Patent US2892991A successfully refreshed from Google Patents.
US2905653A
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Oriented products from graft copolymers of vinyl ester on acrylonitrile polymer
Assignee: Bridgestone Firestone Inc
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Filing: 1957-05-14
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Granted: 1959-09-22
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Expires: 1977-05-14
Abstract
No abstract record available.
Inventors
- 👤 Robert A Hayes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:26
CPC Classifications
C; C08; C08F; C08F265/00; C08F265/08; Y; Y10; Y10S; Y10S8/00; Y10S8/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
69 words
A GRAFT COPOLYMER WHICH PREPARED BY POLYMERIZING A MONOMER MATERIAL CONSISTING OF A VINYL ESTER, IN AN AQUEOUS EMULISION OF POLYMERIC MATERIAL CONSISTING OF ACRYLONITRILE HOMOPOLYMER, THE VINYL ESTER BEING A VINYL ESTER OF A SATURATED MONOCARBOXYLIC ACID HAVING 1 TO 8 CARBON ATOMS IN THE ACID CHAIN, AND THE COPOLYMER CONTAINING SUBSTANTIALLY 10 TO 25 PERCENT OF THE COMBINED ESTER BASED ON THE WEIGHT OF THE GRAFT COPOLYMER
Claim 2
Dependent Claim
69 words
A GRAFT COPOLYMER WHICH PREPARED BY POLYMERIZING A MONOMER MATERIAL CONSISTING OF A VINYL ESTER, IN AN AQUEOUS EMULISION OF POLYMERIC MATERIAL CONSISTING OF ACRYLONITRILE HOMOPOLYMER, THE VINYL ESTER BEING A VINYL ESTER OF A SATURATED MONOCARBOXYLIC ACID HAVING 1 TO 8 CARBON ATOMS IN THE ACID CHAIN, AND THE COPOLYMER CONTAINING SUBSTANTIALLY 10 TO 25 PERCENT OF THE COMBINED ESTER BASED ON THE WEIGHT OF THE GRAFT COPOLYMER
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) | 1962-09-21 | 1963-03-23 | 1963-09-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-09-21 | 1967-03-23 | 1967-09-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-09-21 | 1971-03-23 | 1971-09-22 | $7700.00 | Window Closed / Lapsed |