US2671112A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the manufacture of beta-carotene
Assignee: Individual
•
Filing: 1951-04-17
•
Granted: 1954-03-02
•
Expires: 1971-04-17
Abstract
No abstract record available.
Inventors
- 👤 Inhoffen Hans Herloff
- 👤 Bohlmann Ferdinand
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 13:50
CPC Classifications
C; C07; C07C; C07C403/00; C07C403/14; C07C11/00; C07C11/02; C07C11/21; C07C13/00; C07C13/02; C07C13/28; C07C13/32; C07C5/00; C07C5/22; C07C5/23; C07C5/25; C07C5/2506; C07C6/00; C07C6/02; C07C6/04; C07C2521/00; C07C2521/06; C07C2523/00; C07C2523/38; C07C2523/40; C07C2523/44; C07C2601/00; C07C2601/12; C07C2601/16
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
23 words
2,6-DIMETHYL - 8-(2'',6'',6'' - TRIMETHYLCYCLOHEXENE - (1'') - YL)-OCTATRIENE- (2,4,6) - AL-(1). 5. 28L - DIMETHYL-8-(2'',6'',6'' - TRIMETHYLCYCLOHEXENE - (1'')-YL)-OCTADIENE - (K,7)-YNE-(3) -AL(1).
References Cited (Backward Citations)
US2369159A
Cited
US2451738A
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US2451737A
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US2451735A
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US2451736A
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US2529498A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-03-01 | 1957-08-31 | 1958-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-03-01 | 1961-08-31 | 1962-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-03-01 | 1965-08-31 | 1966-03-02 | $7700.00 | Window Closed / Lapsed |