US2879255A
Expired / Lapsed
US
⏱️ 0.0 years remaining
N-dialkylaminoalkyl acrylamide and methacrylamide modified polyacry-lonitriles and process for preparing same
Assignee: Eastman Kodak Co
•
Filing: 1954-08-05
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Granted: 1959-03-24
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Expires: 1974-08-05
Abstract
No abstract record available.
Inventors
- 👤 Jr Harry W Coover
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 10:01
CPC Classifications
C; C08; C08F; C08F265/00; C08F265/10; Y; Y10; Y10S; Y10S8/00; Y10S8/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
29 words
A RESINOUS GRAFT COPOLYMER OF (1) 40-5% BY WEIGHT OF A POLYMER SELECTED FROM THE GROUP CONSISTING OF (A) A HOMOPOLYMER OF A MONOMER REPRESENTED BY THE GENERAL FORMULA:
Claim 2
Dependent Claim
29 words
A RESINOUS GRAFT COPOLYMER OF (1) 40-5% BY WEIGHT OF A POLYMER SELECTED FROM THE GROUP CONSISTING OF (A) A HOMOPOLYMER OF A MONOMER REPRESENTED BY THE GENERAL FORMULA:
References Cited (Backward Citations)
US2735831A
Cited
US2735830A
Cited
US2311548A
Cited
US2649434A
Cited
US2657191A
Cited
US2595907A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-03-23 | 1962-09-22 | 1963-03-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-03-23 | 1966-09-22 | 1967-03-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-03-23 | 1970-09-22 | 1971-03-24 | $7700.00 | Window Closed / Lapsed |