US2917539A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the manufacture of carotenoids
Assignee: F Hoffmann La Roche AG
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Filing: 1956-12-20
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Granted: 1959-12-15
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Expires: 1976-12-20
Abstract
No abstract record available.
Inventors
- 👤 Isler Otto
- 👤 Montavon Marc
- 👤 Ruegg Rudolf
- 👤 Zeller Paul
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:23
CPC Classifications
C; C07; C07C; C07C403/00; C07C403/24; C07C403/06; C07C403/10; C07C403/12; C07C403/14; C07C45/00; C07C45/27; C07C45/29; C07C45/61; C07C45/62; C07C45/64; C07C2601/00; C07C2601/12; C07C2601/14; C07C2601/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
10 words
1,18-DI-(2,6,6-TRIMETHYL-4-LOWER ALKANOYLOXY-1-CYCLOHEXYLIDENE) - 3,7,12,16 - TETRAMETHYL - 4,15 - DIHYDROXY-2,7,9,11,16-OCTADECAPENTAEN-5,13-DI-YNE.
Claim 2
Dependent Claim
10 words
1,18-DI-(2,6,6-TRIMETHYL-4-LOWER ALKANOYLOXY-1-CYCLOHEXYLIDENE) - 3,7,12,16 - TETRAMETHYL - 4,15 - DIHYDROXY-2,7,9,11,16-OCTADECAPENTAEN-5,13-DI-YNE.
References Cited (Backward Citations)
US2609396A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-12-14 | 1963-06-15 | 1963-12-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-12-14 | 1967-06-15 | 1967-12-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-12-14 | 1971-06-15 | 1971-12-15 | $7700.00 | Window Closed / Lapsed |