US3029213A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fiber-forming graft copolymers of vinyl cyanide on nu-vinyl-3-morpholinone polymer substrates, their preparation and use
Assignee: Dow Chemical Co
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Filing: 1960-03-03
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Granted: 1962-04-10
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Expires: 1980-03-03
Abstract
No abstract record available.
Inventors
- 👤 Armen Ardy
- 👤 Stanley A Murdock
- 👤 Giles R Cokelet
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 10:28
CPC Classifications
C; C08; C08F; C08F271/00; C08F271/02; Y; Y10; Y10S; Y10S8/00; Y10S8/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
60 words
METHOD FOR PREPARING FIBER-FORMING GRAFT COPOLYMERS WHICH COMPRISES: (1) DISSOLVING, IN AN AQUEOUS SALINE SOLUTION THAT IS A SOLVENT FOR POLYACRYLONITRILE, (A) AN ETHYLENICALLY UNSATURATED MONOMERIC MATERIAL COMPRISING AT LEAST A PREDOMINANT PROPORTION OF VINYL CYANIDE, AND (B), A POLYMER OF AN ETHYLENICALLY UNSATURATED MONOMERIC MATERIAL CONTAINING AT LEAST ABOUT 50 WEIGHT PERCENT OF A N-VINYL-3-MORPHOLINONE MONOMER OF THE STRUCTURE
Claim 2
Dependent Claim
60 words
METHOD FOR PREPARING FIBER-FORMING GRAFT COPOLYMERS WHICH COMPRISES: (1) DISSOLVING, IN AN AQUEOUS SALINE SOLUTION THAT IS A SOLVENT FOR POLYACRYLONITRILE, (A) AN ETHYLENICALLY UNSATURATED MONOMERIC MATERIAL COMPRISING AT LEAST A PREDOMINANT PROPORTION OF VINYL CYANIDE, AND (B), A POLYMER OF AN ETHYLENICALLY UNSATURATED MONOMERIC MATERIAL CONTAINING AT LEAST ABOUT 50 WEIGHT PERCENT OF A N-VINYL-3-MORPHOLINONE MONOMER OF THE STRUCTURE
References Cited (Backward Citations)
US2949435A
Cited
US2948708A
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 |