US2622074A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Salts of alpha-acylamido and alpha-alkoxycarbonamido acrylic acids
Assignee: Eastman Kodak Co
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Filing: 1949-12-09
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Granted: 1952-12-16
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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
2026-10-26 06:44
CPC Classifications
C; C08; C08F; C08F26/00; C08F26/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
20 words
A POLYMER OF A SALT OF AN A-SUBSTITUTED ACRYLIC ACID OF THE GROUP CONSISTING OF SALTS HAVING THE GENERAL FORMULAS:
Claim 2
Dependent Claim
20 words
A POLYMER OF A SALT OF AN A-SUBSTITUTED ACRYLIC ACID OF THE GROUP CONSISTING OF SALTS HAVING THE 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) | 1955-12-16 | 1956-06-16 | 1956-12-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-12-16 | 1960-06-16 | 1960-12-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-12-16 | 1964-06-16 | 1964-12-16 | $7700.00 | Window Closed / Lapsed |