US3792037A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for preparing ambutyrosin
Assignee: Bristol Myers Co
•
Filing: 1971-11-04
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Granted: 1974-02-12
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Expires: 1991-11-04
Abstract
Abstract THE SPECIFICATION DISCLOSES A PROCESS FOR PREPARING AMBUTYROSIN BY A SEMISYNTHETIC PROCEDURE COMPRISING THE STEPS OF ACYLATING 5-B-D-XYLOFURANOASYLNEAMINE OR 5-B-DRIBOFURANOSYLNEAMINE.
Inventors
- 👤 H Kawaguchi
- 👤 M Konishi
- 👤 H Tsukiura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 06:13
CPC Classifications
C; C07; C07D; C07D307/00; C07D307/02; C07D307/26; C07D307/30; C07D307/32; C07D307/33; C07D207/00; C07D207/46; C07H; C07H15/00; C07H15/20; C07H15/22; C07H15/222; C07H15/226; C07H15/228; C07H15/23
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) | 1977-02-11 | 1977-08-13 | 1978-02-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-02-11 | 1981-08-13 | 1982-02-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-02-11 | 1985-08-13 | 1986-02-12 | $7700.00 | Window Closed / Lapsed |