US3788947A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Microbiological reduction of10(11)unsaturated prostaglandins
Assignee: GD Searle LLC
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Filing: 1972-10-05
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Granted: 1974-01-29
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Expires: 1992-10-05
Abstract
Abstract THE PRESENT INVENTION RELATES TO FERMENTATIVE REDUCTION OF THE 10(11) DOUBLE BOND OF PGA-TYPE PROSTAGLANDINS. MORE PARTICULARLY, THE INVENTION PROVIDES A PROCESS FOR SELECTIVE 10(1) DOUBLE BOND REDUCTION OF PGA2 BY FUNGI OF GENERA CUNNINGHAMELLA, MUCOR, POLYPORUS, SPHAEROPSIS, STEMPHYLIUM, CLADOSPORIUM, HORMODENDRUM, EPICOCCIUM, FUSARIUM, GLIOCLADIUM, DACTYLIUM, CEPHALOSPORIUM, ASPERGILLUS, AND PENCILLIUM. THE SAME TRANSFORMATION IS ACCOMPLISHED BY BACTERIA OF GENERA BACILLUS, EN TEROBACTER, ESCHERICHIA, AND PROTEUS.
Inventors
- 👤 C Hsu
- 👤 J Jiu
- 👤 S Mizuba
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 14:03
CPC Classifications
C; C12; C12P; C12P31/00; C07; C07C; C07C405/00; Y; Y10; Y10S; Y10S435/00; Y10S435/8215; Y10S435/822; Y10S435/832; Y10S435/838; Y10S435/848; Y10S435/849; Y10S435/873; Y10S435/911; Y10S435/913; Y10S435/915; Y10S435/917; Y10S435/918; Y10S435/925; Y10S435/929; Y10S435/931; Y10S435/933
Claims Analysis
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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) | 1977-01-28 | 1977-07-30 | 1978-01-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-28 | 1981-07-30 | 1982-01-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-28 | 1985-07-30 | 1986-01-29 | $7700.00 | Window Closed / Lapsed |