US2763657A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aminomethyl-substituted aroylresorcinols
Assignee: Eastman Kodak Co
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Filing: 1952-10-31
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Granted: 1956-09-18
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Expires: 1972-10-31
Abstract
No abstract record available.
Inventors
- 👤 Charles F H Allen
- 👤 James A Van Allan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 12:36
CPC Classifications
C; C07; C07D; C07D295/00; C07D295/04; C07D295/10; C07D295/112; G; G03; G03C; G03C1/00; G03C1/76; G03C1/815; G03C1/8155
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
11 words
A COMPOUND SELECTED FROM THOSE REPRESENTED BY THE FOLLOWING GENERAL FORMULA:
Claim 2
Dependent Claim
11 words
A COMPOUND SELECTED FROM THOSE REPRESENTED BY THE FOLLOWING GENERAL FORMULA:
References Cited (Backward Citations)
US2419553A
Cited
US2484621A
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US2513173A
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US2580494A
Cited
US2568894A
Cited
US2565300A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-09-18 | 1960-03-19 | 1960-09-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-09-18 | 1964-03-19 | 1964-09-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-09-18 | 1968-03-19 | 1968-09-18 | $7700.00 | Window Closed / Lapsed |