Patent US2810624A successfully refreshed from Google Patents.
US3017280A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hardening of coatings of polymers containing carboxyl groups
Assignee: Eastman Kodak Co
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Filing: 1959-04-20
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Granted: 1962-01-16
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Expires: 1979-04-20
Abstract
No abstract record available.
Inventors
- 👤 Yudelson Joseph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:59
CPC Classifications
C; C07; C07D; C07D403/00; C07D403/02; C07D403/04; C09; C09D; C09D157/00; G; G03; G03C; G03C1/00; G03C1/005; G03C1/06; G03C1/30; G03C1/302
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
46 words
A COATING COMPOSITION COMPRISING A POLYMER IN WHICH NCARBOXYL GROUPS ARE CHEMICALLY COMBINED THEREWITH HAVING THEREIN AS A HARDENER FOR THE COATINGS PREPARED THEREFORM AN AZIRIDINYL AZINE CONTAINING AT LEAST TWO AZIRDINE GROUPS, IN AN AMOUNT AT LEAST 0.5%, BASED ON THE WEIGHT OF THE POLYMER.
Claim 2
Dependent Claim
46 words
A COATING COMPOSITION COMPRISING A POLYMER IN WHICH NCARBOXYL GROUPS ARE CHEMICALLY COMBINED THEREWITH HAVING THEREIN AS A HARDENER FOR THE COATINGS PREPARED THEREFORM AN AZIRIDINYL AZINE CONTAINING AT LEAST TWO AZIRDINE GROUPS, IN AN AMOUNT AT LEAST 0.5%, BASED ON THE WEIGHT OF THE POLYMER.
References Cited (Backward Citations)
US2842451A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-01-15 | 1965-07-17 | 1966-01-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-01-15 | 1969-07-17 | 1970-01-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-01-15 | 1973-07-17 | 1974-01-16 | $7700.00 | Window Closed / Lapsed |