US2882290A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Graft copolymers containing at least three components including acrylonitrile and a vinyl pyridine
Assignee: Eastman Kodak Co
•
Filing: 1954-07-30
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Granted: 1959-04-14
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Expires: 1974-07-30
Abstract
No abstract record available.
Inventors
- 👤 Jr Harry W Coover
- 👤 Joseph B Dickey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 15:56
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
15 words
A GRAFT COPOLYMER OF (A) A PREFORMED HOMOPOLYMER OF A VINYL PYRIDINE HAVING THE FORMULA
Claim 2
Dependent Claim
15 words
A GRAFT COPOLYMER OF (A) A PREFORMED HOMOPOLYMER OF A VINYL PYRIDINE HAVING THE FORMULA
References Cited (Backward Citations)
US2538779A
Cited
US2614089A
Cited
US2527863A
Cited
GB680359A
Cited
US2620324A
Cited
US2749325A
Cited
US2746943A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-04-13 | 1962-10-13 | 1963-04-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-04-13 | 1966-10-13 | 1967-04-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-04-13 | 1970-10-13 | 1971-04-14 | $7700.00 | Window Closed / Lapsed |