US2721852A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Interpolymers of vinylpyridines or vinylquinolines, acrylic esters, acrylic amides and styrenes, and hydrosols thereof
Assignee: Eastman Kodak Co
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Filing: 1954-02-05
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Granted: 1955-10-25
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Expires: 1974-02-05
Abstract
No abstract record available.
Inventors
- 👤 Jr William F Fowler
- 👤 Delbert D Reynolds
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 15:48
CPC Classifications
G; G03; G03C; G03C7/00; G03C7/22; G03C7/25; C; C08; C08F; C08F20/00; C08F20/62; C08F220/00; C08F220/02; C08F220/10; C08F220/12; C08F26/00; C08F26/06; G03C1/00; G03C1/005; G03C1/04; G03C1/053; Y; Y10; Y10S; Y10S430/00; Y10S430/142
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
24 words
A RESINOUS QUATERNARY INTERPOLYMER COMPRISING FROM 3.5 TO 16 PERCENT BY WEIGHT OF A COMPOUND SELECTED FROM THOSE REPRESENTED BY THE FOLLOWING GENERAL FORMULAS:
Claim 2
Dependent Claim
24 words
A RESINOUS QUATERNARY INTERPOLYMER COMPRISING FROM 3.5 TO 16 PERCENT BY WEIGHT OF A COMPOUND SELECTED FROM THOSE REPRESENTED BY THE FOLLOWING GENERAL FORMULAS:
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-10-24 | 1959-04-25 | 1959-10-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-10-24 | 1963-04-25 | 1963-10-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-10-24 | 1967-04-25 | 1967-10-25 | $7700.00 | Window Closed / Lapsed |