Patent US2704751A successfully refreshed from Google Patents.
US2704751A
Expired / Lapsed
US
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Alpha-ureidomethyl acrylonitriles and polymers thereof
Assignee: Eastman Kodak Co
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Filing: 1953-07-15
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Granted: 1955-03-22
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Expires: 1973-07-15
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
2026-10-29 22:20
CPC Classifications
C; C07; C07C; C07C275/00; C07C275/04; C07C275/20; C08; C08F; C08F20/00; C08F20/02; C08F20/42; C08F20/50
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
9 words
AN ALPHA-UREIDOMETHYL ACRYLONITRILE REPRESENTED BY THE GENERAL STRUCTURAL FORMULA:
Claim 2
Dependent Claim
9 words
AN ALPHA-UREIDOMETHYL ACRYLONITRILE REPRESENTED BY THE GENERAL STRUCTURAL FORMULA:
References Cited (Backward Citations)
US2606892A
Cited
US2544638A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-03-21 | 1958-09-20 | 1959-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-03-21 | 1962-09-20 | 1963-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-03-21 | 1966-09-20 | 1967-03-22 | $7700.00 | Window Closed / Lapsed |