Patent US4751632A successfully refreshed from Google Patents.
US3137731A
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Process for preparing substituted cyclopentenones
Assignee: Givaudan Roure Corp
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Filing: 1962-01-26
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Granted: 1964-06-16
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Expires: 1982-01-26
Abstract
No abstract record available.
Inventors
- 👤 Julius L E Erickson
- 👤 Dorsky Julian
- 👤 Jr William M Easter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 05:47
CPC Classifications
C; C11; C11B; C11B9/00; C11B9/0026; C11B9/003; C07; C07C; C07C45/00; C07C45/51; C07C45/511; C07C45/61; C07C45/62
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
28 words
THE PROCESS FOR PREPARING SUBSTITUTED CYCLOPENTENONES WHICH COMPRISES HEATING, IN THE PRESENCE OF A SOLVENT AND AT A TEMPERATURE UP TO REFLUX TEMPERATURE, A MATERIAL HAVING THE FORMULA
Claim 2
Dependent Claim
28 words
THE PROCESS FOR PREPARING SUBSTITUTED CYCLOPENTENONES WHICH COMPRISES HEATING, IN THE PRESENCE OF A SOLVENT AND AT A TEMPERATURE UP TO REFLUX TEMPERATURE, A MATERIAL HAVING THE FORMULA
References Cited (Backward Citations)
US2069861A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-06-16 | 1967-12-16 | 1968-06-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-16 | 1971-12-16 | 1972-06-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-16 | 1975-12-16 | 1976-06-16 | $7700.00 | Window Closed / Lapsed |