US2887479A
Expired / Lapsed
US
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Heterocyclic quaternary salts containing a cyclohexenylidenemethyl substituent
Assignee: Eastman Kodak Co
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Filing: 1955-11-15
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Granted: 1959-05-19
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Expires: 1975-11-15
Abstract
No abstract record available.
Inventors
- 👤 Donald W Heseltine
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:04
CPC Classifications
C; C09; C09B; C09B23/00; C09B23/0066; G; G03; G03C; G03C1/00; G03C1/005; G03C1/06; G03C1/08; G03C1/10; G03C1/12; G03C1/14
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
29 words
A PROCESS FOR MAKING HETEROCYCLIC COMPOUNDS COMPRISING HEATING TOGETHER AT A TEMPERATURTE OF FROM 100 TO 200* C, A COMPOUND SELECTED FROM THOSE REPRESENTED BY THE FOLLOWING GENERAL FORMULA:
Claim 2
Dependent Claim
29 words
A PROCESS FOR MAKING HETEROCYCLIC COMPOUNDS COMPRISING HEATING TOGETHER AT A TEMPERATURTE OF FROM 100 TO 200* C, A COMPOUND SELECTED FROM THOSE REPRESENTED BY THE FOLLOWING GENERAL FORMULA:
Claim 3
Dependent Claim
12 words
A HETEROCYCLIC COMPOUND SELECTED FROM THOSE REPSENTED BY THE FOLLOWING GENERAL FORMULA:
Claim 4
Dependent Claim
12 words
A HETEROCYCLIC COMPOUND SELECTED FROM THOSE REPSENTED BY THE FOLLOWING GENERAL FORMULA:
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-05-18 | 1962-11-17 | 1963-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-05-18 | 1966-11-17 | 1967-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-05-18 | 1970-11-17 | 1971-05-19 | $7700.00 | Window Closed / Lapsed |