Patent US2966481A successfully refreshed from Google Patents.
US2966481A
Expired / Lapsed
US
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Copolymers of nu-(acylamidomethyl)-acrylamides
Assignee: EIDP Inc
•
Filing: 1955-04-28
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Granted: 1960-12-27
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Expires: 1975-04-28
Abstract
No abstract record available.
Inventors
- 👤 Neal O Brace
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 16:29
CPC Classifications
C; C08; C08F; C08F20/00; C08F20/02; C08F20/52; C08F20/54; C08F20/60; Y; Y10; Y10S; Y10S8/00; Y10S8/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
18 words
A COPOLYMER DERIVED BY POLYMERIZING FROM 5 TO 20 MOLECULAR PARTS OF A COMPOUND HAVING THE GENERAL FORMULA:
Claim 2
Dependent Claim
18 words
A COPOLYMER DERIVED BY POLYMERIZING FROM 5 TO 20 MOLECULAR PARTS OF A COMPOUND HAVING THE GENERAL FORMULA:
References Cited (Backward Citations)
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US2606810A
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US2885438A
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US2827397A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-12-27 | 1964-06-27 | 1964-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-12-27 | 1968-06-27 | 1968-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-12-27 | 1972-06-27 | 1972-12-27 | $7700.00 | Window Closed / Lapsed |