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Patent US2731498A successfully refreshed from Google Patents.
US2731498A
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Basic derivative of 4-cyclohexyl-cyclohexanone and process for the manufacture thereof
Assignee: F Hoffmann La Roche AG
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Filing: 1954-04-28
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Granted: 1956-01-17
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Expires: 1974-04-28
Abstract
No abstract record available.
Inventors
- 👤 Walter Max
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 22:31
CPC Classifications
C; C07; C07C; C07C209/00; C07C209/24; C07C209/26; C07C211/00; C07C211/33; C07C211/34; C07C211/35; C07C211/36; C07C2601/00; C07C2601/12; C07C2601/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
13 words
A MEMBER OF THE GROUP CONSISTING OF 2-DIMETHYLAMINOMETHYL-4-CYCLOHEXYL-CYCLOHEXANONE AND ACID ADDITION SALTS THEREOF.
Claim 2
Dependent Claim
13 words
A MEMBER OF THE GROUP CONSISTING OF 2-DIMETHYLAMINOMETHYL-4-CYCLOHEXYL-CYCLOHEXANONE AND ACID ADDITION SALTS THEREOF.
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) | 1959-01-16 | 1959-07-18 | 1960-01-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-01-16 | 1963-07-18 | 1964-01-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-01-16 | 1967-07-18 | 1968-01-17 | $7700.00 | Window Closed / Lapsed |