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US3819831A
Expired / Lapsed
US
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Angiotensin converting enzyme inhibitor-fractionated snake venom
Assignee: ER Squibb and Sons LLC
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Filing: 1971-09-21
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Granted: 1974-06-25
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Expires: 1991-09-21
Abstract
Abstract DISCLOSED HEREIN IS A PROCESS FOR THE FRACTIONATION OF SNAKE VENOM AND THE UTILIZATION OF CERTAIN OF THE RESULTANT FRACTIONS AS ANGIOTENSIN CONVERTING ENZYME INHIBITORS.
Inventors
- 👤 M Ondetti
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 19:54
CPC Classifications
A; A61; A61K; A61K35/00; A61K35/56; A61K35/58; C; C07; C07K; C07K14/00; C07K14/81; C07K14/8103
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) | 1977-06-24 | 1977-12-24 | 1978-06-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-24 | 1981-12-24 | 1982-06-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-24 | 1985-12-24 | 1986-06-25 | $7700.00 | Window Closed / Lapsed |