US3657436A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of treating col-sk virus infections
Assignee: F Hoffmann La Roche AG
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Filing: 1970-02-09
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Granted: 1972-04-18
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Expires: 1990-02-09
Abstract
Abstract ANTHRANILIC ACID DERIVATIVES WHICH ARE USEFUL IN COMBATTING VIRAL INFECTIONS CAUSED BY COL-SK AND COMPOSITIONS CONTAINING THESE DERIVATIVES.
Inventors
- 👤 Leo Berger
- 👤 Emanuel Grunberg
- 👤 Leo Henryk Sternbach
- 👤 Arthur Stempel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 10:25
CPC Classifications
A; A61; A61K; A61K31/00; A61K31/185; A61K31/19; A61K31/33; A61K31/395; A61K31/535
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) | 1975-04-18 | 1975-10-18 | 1976-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-04-18 | 1979-10-18 | 1980-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-04-18 | 1983-10-18 | 1984-04-18 | $7700.00 | Window Closed / Lapsed |