Patent US2831826A successfully refreshed from Google Patents.
US2831826A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mixtures of acrylic nitrile-ethylenic chloride copolymers with acrylamidic polymers and fibers thereof
Assignee: Eastman Kodak Co
•
Filing: 1954-12-30
•
Granted: 1958-04-22
•
Expires: 1974-12-30
Abstract
No abstract record available.
Inventors
- 👤 Jr Harry W Coover
- 👤 Jr Willis C Wooten
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:38
CPC Classifications
C; C08; C08L; C08L27/00; C08L27/02; C08L27/04; C08L27/08; C08L33/00; C08L33/18; C08L33/20; D; D01; D01F; D01F6/00; D01F6/44; D01F6/48; D01F6/54; C08L33/24; C08L33/26
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
55 words
A FIBER-FORMING, FLAME RESISTANT, ACETONE SOLUBLE MIXTURE OF (A) 70-95% BY WEIGHT OF A COPOLYMER OF FROM 30 TO 65% BY WEIGHT OF VINYLIDENE CHLORIDE AND 70 TO 35% BY WEIGHT OF ACRYLONITRILE, AND (B) 30-5% BY WEIGHT OF A SECOND POLYMER FROM THE GROUP CONSISTING OF (1) HOMOPOLYMERS OF ACRYLAMIDE MONOMERS OF THE FORMULA
Claim 2
Dependent Claim
55 words
A FIBER-FORMING, FLAME RESISTANT, ACETONE SOLUBLE MIXTURE OF (A) 70-95% BY WEIGHT OF A COPOLYMER OF FROM 30 TO 65% BY WEIGHT OF VINYLIDENE CHLORIDE AND 70 TO 35% BY WEIGHT OF ACRYLONITRILE, AND (B) 30-5% BY WEIGHT OF A SECOND POLYMER FROM THE GROUP CONSISTING OF (1) HOMOPOLYMERS OF ACRYLAMIDE MONOMERS OF 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) | 1961-04-21 | 1961-10-21 | 1962-04-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-04-21 | 1965-10-21 | 1966-04-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-04-21 | 1969-10-21 | 1970-04-22 | $7700.00 | Window Closed / Lapsed |