US2833694A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for splitting racemates
Assignee: CIBA PHARM PROD Inc
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Filing: 1956-08-16
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Granted: 1958-05-06
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Expires: 1976-08-16
Abstract
No abstract record available.
Inventors
- 👤 Prelog Vladimir
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:13
CPC Classifications
F; F16; F16K; F16K17/00; F16K17/02; F16K17/14; F16K17/16; F16K17/162; C; C12; C12N; C12N9/00; C12N9/90; C12P; C12P7/00; C12P7/02; C12P7/22; C12P7/24; C12P7/26; C07; C07B; C07B2200/00; C07B2200/07; Y; Y10; Y10S; Y10S435/00; Y10S435/8215; Y10S435/822; Y10S435/886; Y10S435/899; Y10S435/911; Y10S435/939; Y10S435/94; Y10S435/942
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
60 words
PROCESS FOR SPLITTING RACEMATES, WHICH COMPRISES SUBJECTING RACEMATES OF BICYCLIC-ALICYCLIC COMPOUNDS CONTAINING AT LEAST ONE GROUPING REDUCIBLE WITH THE FORMATION OF A NEW CENTRE OF ASYMMETRY, TO THE ACTION OF REDUCING ENZYMES PRODUCED BY CULTURES OF MICROORGANISMS, ISOLATING AT LEAST ONE OF THE RESULTING OPTICALLY ACTIVE PRODUCTS AND SUBJECTING ANY HYDROGENATED PRODUCT OBTAINED TO THE ACTION OF A DEHYDROGENATING AGENT.
Claim 2
Dependent Claim
60 words
PROCESS FOR SPLITTING RACEMATES, WHICH COMPRISES SUBJECTING RACEMATES OF BICYCLIC-ALICYCLIC COMPOUNDS CONTAINING AT LEAST ONE GROUPING REDUCIBLE WITH THE FORMATION OF A NEW CENTRE OF ASYMMETRY, TO THE ACTION OF REDUCING ENZYMES PRODUCED BY CULTURES OF MICROORGANISMS, ISOLATING AT LEAST ONE OF THE RESULTING OPTICALLY ACTIVE PRODUCTS AND SUBJECTING ANY HYDROGENATED PRODUCT OBTAINED TO THE ACTION OF A DEHYDROGENATING AGENT.
References Cited (Backward Citations)
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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) | 1961-05-05 | 1961-11-04 | 1962-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-05-05 | 1965-11-04 | 1966-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-05-05 | 1969-11-04 | 1970-05-06 | $7700.00 | Window Closed / Lapsed |