US2653167A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for the preparation of cyclohexene-4-carboxylic acids
Assignee: Goodrich Corp
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Filing: 1951-07-18
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Granted: 1953-09-22
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Expires: 1971-07-18
Abstract
No abstract record available.
Inventors
- 👤 Jansen Jacob Eden
- 👤 Frank X Werber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 07:39
CPC Classifications
C; C07; C07C; C07C61/00; C07C51/00; C07C51/347; C07C51/353; C07C61/16; C07C2601/00; C07C2601/12; C07C2601/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
58 words
THE METHOD WHICH COMPRISES REACTING A MEMBER OF THE CLASS CONSISTING OF BETA-LACTONES HAVING AT LEAST ONE HYDROGEN ATOM ON THE ALPHA CARBON ATOM, AND HOMOPOLYMERS OF SAID BETALACTONES, WITH A MEMBER OF THE CLASS CONSISTING OF ACYCLIC AND ALICYCLIC POLYENES, AT A TEMPERATURE OF FROM ABOUT 100* C. TO 250* C. THEREBY TO OBTAIN A CYCLOHEXENE-4-CARBOXYLIC ACID
Claim 2
Independent Claim
58 words
THE METHOD WHICH COMPRISES REACTING A MEMBER OF THE CLASS CONSISTING OF BETA-LACTONES HAVING AT LEAST ONE HYDROGEN ATOM ON THE ALPHA CARBON ATOM, AND HOMOPOLYMERS OF SAID BETALACTONES, WITH A MEMBER OF THE CLASS CONSISTING OF ACYCLIC AND ALICYCLIC POLYENES, AT A TEMPERATURE OF FROM ABOUT 100* C. TO 250* C. THEREBY TO OBTAIN A CYCLOHEXENE-4-CARBOXYLIC ACID
References Cited (Backward Citations)
US2487885A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-09-21 | 1957-03-23 | 1957-09-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-09-21 | 1961-03-23 | 1961-09-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-09-21 | 1965-03-23 | 1965-09-22 | $7700.00 | Window Closed / Lapsed |