US2883425A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for preparing bicyclooctenones
Assignee: EIDP Inc
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Filing: 1957-01-31
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Granted: 1959-04-21
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Expires: 1977-01-31
Abstract
No abstract record available.
Inventors
- 👤 Thomas J Kealy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 13:46
CPC Classifications
C; C07; C07C; C07C45/00; C07C45/51; C07C45/511; C07C45/512
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
33 words
A METHOD FOR PREPARING BICYCLOOCTENONES WHICH COMPRISES REACTING ETHYLENE AND A COMPOUND OF THE GROUP OF MONOHYDRIC PHENOLS AND RESORCINOL AT TEMPERATURES OF 200-400*C. AND AT A PRESSURE OF AT LEAST 1000 ATMOSPHERES.
Claim 2
Independent Claim
33 words
A METHOD FOR PREPARING BICYCLOOCTENONES WHICH COMPRISES REACTING ETHYLENE AND A COMPOUND OF THE GROUP OF MONOHYDRIC PHENOLS AND RESORCINOL AT TEMPERATURES OF 200-400*C. AND AT A PRESSURE OF AT LEAST 1000 ATMOSPHERES.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-04-20 | 1962-10-20 | 1963-04-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-04-20 | 1966-10-20 | 1967-04-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-04-20 | 1970-10-20 | 1971-04-21 | $7700.00 | Window Closed / Lapsed |