US3822188A
Expired / Lapsed
US
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Method of producing 1,4'-dihydroxy-3-n-pentyl-6,6,9-trimethyl-6a,7,10,10a-tetra-hydrodibenzo(b,d)pyran
Assignee: Abbott Laboratories
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Filing: 1973-08-01
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Granted: 1974-07-02
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Expires: 1993-08-01
Abstract
Abstract THE COMPOUND 1,4''- DIHYDROXY -3-N-PENTYL-6,6,9TRIMETHYL - 6A,7,10,10A - TETRAHYDRODIBENZO (B,D)PYRAN, WHICH CAN BE PREPARED BY MICROBIAL TRANSFORMATION OF 1-HYDROXY-3-N-PENTYL - 6,6,9- TRIMETHYL-6A,7,10,10A-TETRAHYDRODIBENZO (B,D)PYRAN. THE COMPOUND IS USEFUL AS AN ANTI-DEPRESSANT AGENT,
Inventors
- 👤 E Fager
- 👤 N Wideburg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 21:50
CPC Classifications
C; C07; C07D; C07D311/00; C07D311/02; C07D311/78; C07D311/80; Y; Y10; Y10S; Y10S435/00; Y10S435/8215; Y10S435/822; Y10S435/826; Y10S435/886; Y10S435/911; Y10S435/912; Y10S435/913
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) | 1977-07-01 | 1977-12-31 | 1978-07-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-07-01 | 1981-12-31 | 1982-07-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-07-01 | 1985-12-31 | 1986-07-02 | $7700.00 | Window Closed / Lapsed |