Patent US3388042A successfully refreshed from Google Patents.
US3388042A
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Process for preparing androst-4-ene-3, 17-dione and androsta-1, 4-diene-3, 17-dione from sterol compounds by the action of microorganisms
Assignee: Noda Institute for Scientific Research
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Filing: 1965-03-22
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Granted: 1968-06-11
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Expires: 1985-03-22
Abstract
No abstract record available.
Inventors
- 👤 Arima Kei
- 👤 Tamura Gakuzo
- 👤 Nagasawa Michitaro
- 👤 Bae Mu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 10:21
CPC Classifications
C; C12; C12P; C12P33/00; C12P33/005; C12P33/02; Y; Y10; Y10S; Y10S435/00; Y10S435/8215; Y10S435/822; Y10S435/83; Y10S435/832; Y10S435/84; Y10S435/843; Y10S435/863; Y10S435/866; Y10S435/867; Y10S435/869; Y10S435/872; Y10S435/88; Y10S435/881
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-06-11 | 1971-12-11 | 1972-06-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-06-11 | 1975-12-11 | 1976-06-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-06-11 | 1979-12-11 | 1980-06-11 | $7700.00 | Window Closed / Lapsed |