US2592248A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Alpha-acylamino acrylamides and polymers thereof
Assignee: Eastman Kodak Co
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Filing: 1949-12-09
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Granted: 1952-04-08
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Expires: 1969-12-09
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
2026-10-30 05:32
CPC Classifications
C; C08; C08F; C08F20/00; C08F20/02; C08F20/52; C08F20/54; C08F20/60
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
17 words
A COPOLYMER OF FROM 5 TO 95% BY WEIGHT OF AN A-ACYLAMINO ACRYLAMIDE HAVING THE GENERAL FORMULA:
Claim 2
Dependent Claim
17 words
A COPOLYMER OF FROM 5 TO 95% BY WEIGHT OF AN A-ACYLAMINO ACRYLAMIDE HAVING THE GENERAL 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) | 1955-04-08 | 1955-10-08 | 1956-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-04-08 | 1959-10-08 | 1960-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-04-08 | 1963-10-08 | 1964-04-08 | $7700.00 | Window Closed / Lapsed |