Patent US3354218A successfully refreshed from Google Patents.
US3354218A
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Process for preparing 4-(2, 6, 6-trimethyl-4-methoxy-1-cyclohexen-1-yl)-3-buten-2-one
Assignee: F Hoffmann La Roche AG
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Filing: 1963-05-10
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Granted: 1967-11-21
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Expires: 1983-05-10
Abstract
No abstract record available.
Inventors
- 👤 Surmatis Joseph Donald
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 04:45
CPC Classifications
C; C07; C07C; C07C403/00; C07C403/24; C07C403/14; C07C403/16; C07C2601/00; C07C2601/12; C07C2601/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
43 words
A PROCESS FOR PREPARING 4-(2,6,6 - TRIMETHYL - 4METHOXY - 1 - CYCLOHEXEN - 1 -YL) - 3 - BUTEN - 2 - ONE (III) FROM 4-(2,6,6 - TRIMETHYL - 1,3 - CYCLOHEXADIEN-1YL)-3-BUTEN-2-ONE (II) COMPRISING TREATING (II) WITH METHYL SULFATE TO FORM III.
Claim 2
Dependent Claim
43 words
A PROCESS FOR PREPARING 4-(2,6,6 - TRIMETHYL - 4METHOXY - 1 - CYCLOHEXEN - 1 -YL) - 3 - BUTEN - 2 - ONE (III) FROM 4-(2,6,6 - TRIMETHYL - 1,3 - CYCLOHEXADIEN-1YL)-3-BUTEN-2-ONE (II) COMPRISING TREATING (II) WITH METHYL SULFATE TO FORM III.
References Cited (Backward Citations)
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Cited
US2898385A
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US2819298A
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US2871267A
Cited
GB843438A
Cited
US2987550A
Cited
US3068292A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-11-20 | 1971-05-22 | 1971-11-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-11-20 | 1975-05-22 | 1975-11-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-11-20 | 1979-05-22 | 1979-11-21 | $7700.00 | Window Closed / Lapsed |