US3814733A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Isomerization of(+)-trans-2,3-epoxy-ciscarane to(+)-cis-2,8-p-methadiene-1-ol
Assignee: SMC Corp
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Filing: 1970-07-27
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Granted: 1974-06-04
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Expires: 1990-07-27
Abstract
Abstract ISOMETIZATION OF (+)-TRANS-2,3-EPOXY-CIS-CARANE TO (+)-CIS-2,8-P-MENTHADIENE-1-OL IS EFFECTED BY CONTACTING THE EPOXY CARBANE WITH METATITANIC ACID AT A TEMPERATURE OF FROM 25-200*C., THE CATALYST CONCENTRATION BEING BRODLY INVERSE TO TEMPERATUE AND RESTRICTED FOR AVOIDANCE OF DEHYDRATION OF THE MENTHADIENE-1-OL PRODUCT.
Inventors
- 👤 J Bledsoe
- 👤 J Derfer
- 👤 W Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:13
CPC Classifications
C; C07; C07C; C07C35/00; C07C35/02; C07C35/08; C07C35/12
Claims Analysis
Total Claims: 0
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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) | 1977-06-03 | 1977-12-03 | 1978-06-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-03 | 1981-12-03 | 1982-06-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-03 | 1985-12-03 | 1986-06-04 | $7700.00 | Window Closed / Lapsed |