Patent US3705894A successfully refreshed from Google Patents.
US3705894A
Expired / Lapsed
US
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Mycophenolic acid derivatives
Assignee: Eli Lilly and Co
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Filing: 1970-09-24
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Granted: 1972-12-12
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Expires: 1990-09-24
Abstract
Abstract DERIVATIVES OF MYCOPHENOLIC ACID HAVING ANTIVIRAL ACTIVITY ARE DESCRIBED. THESE DERIVATIVES ARE OBTAINED BY MODICIATION OF MYCOPHENOLIC ACID AT THE CARBOXYL GROUP, THE PHENOLIC HYDROXYL GROUP, OR BOTH.
Inventors
- 👤 Koert Gerzon
- 👤 Richard E Holmes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 08:00
CPC Classifications
C; C07; C07D; C07D265/00; C07D265/28; C07D265/34; C07D265/36; C07D265/04; C07D265/12; C07D265/14; C07D265/18
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) | 1975-12-12 | 1976-06-12 | 1976-12-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-12-12 | 1980-06-12 | 1980-12-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-12-12 | 1984-06-12 | 1984-12-12 | $7700.00 | Window Closed / Lapsed |