US3242054A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the production of beta-carotene
Assignee: Rhone Poulenc SA
•
Filing: 1963-03-04
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Granted: 1966-03-22
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Expires: 1983-03-04
Abstract
No abstract record available.
Inventors
- 👤 Ninet Leon
- 👤 Renaut Jacques Albert
- 👤 Tissier Robert Charle Francois
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 21:13
CPC Classifications
C; C12; C12P; C12P23/00; Y; Y10; Y10S; Y10S435/00; Y10S435/8215; Y10S435/911
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
63 words
PROCESS FOR THE PRODUCTION OF B-CAROTENE WHICH COMPRISES THE STEPS OF (A) INOCULATING WITH A MIXTURE OF THE + AND - FORMS OF BLAKESLEA TRISPORA A MEDIUM CONTAINING A SOURCE OF ASSIMILABLE NITROGEN, A SOURCE OF ASSIMILABLE CARBON, MINERAL ELEMENTS, AND 2,2,6-TRIMETHYLCYCLOHEXANONE OR 2,2,6-TRIMETHYLCYCLOHEXANONE SEMICARBAZONE, TO FORM A CULTURE, (B) FERMENTING THE CULTURE UNDER AEROBIC CONDITIONS, AND (C) RECOVERING B-CAROTENE FROM THE CULTURE.
Claim 2
Dependent Claim
63 words
PROCESS FOR THE PRODUCTION OF B-CAROTENE WHICH COMPRISES THE STEPS OF (A) INOCULATING WITH A MIXTURE OF THE + AND - FORMS OF BLAKESLEA TRISPORA A MEDIUM CONTAINING A SOURCE OF ASSIMILABLE NITROGEN, A SOURCE OF ASSIMILABLE CARBON, MINERAL ELEMENTS, AND 2,2,6-TRIMETHYLCYCLOHEXANONE OR 2,2,6-TRIMETHYLCYCLOHEXANONE SEMICARBAZONE, TO FORM A CULTURE, (B) FERMENTING THE CULTURE UNDER AEROBIC CONDITIONS, AND (C) RECOVERING B-CAROTENE FROM THE CULTURE.
References Cited (Backward Citations)
US2959522A
Cited
US3079380A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-03-21 | 1969-09-20 | 1970-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-21 | 1973-09-20 | 1974-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-21 | 1977-09-20 | 1978-03-22 | $7700.00 | Window Closed / Lapsed |