Patent US3801633A successfully refreshed from Google Patents.
US3801633A
Expired / Lapsed
US
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N-substituted amino acids having antiviral effects
Assignee: Ajinomoto Co Inc
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Filing: 1970-09-04
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Granted: 1974-04-02
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Expires: 1990-09-04
Abstract
Abstract THE FOLLOWING N-SUBSTITUTED AMINO ACIDS WERE FOUND TO COMBAT INFECTION WITH INFLUENZA VIRUS IN VIVO: N-A-NAPHTHYLACETYLLEUCINE N-4-NITROPHENOXYACETYL-4-NITROPHENYLALANINE N-CARBOXYMETHYLPHENYLALANINE N-BENZYLPHENYLALANINE N-FURFURYLPHENYLALANINE N-B-NAPHTHYLAMINOMETHYLALANINE N-B-NAPHTHYLAMINOMETHYLLMETHIONINE 6-(B-NAPHTHYLAMINOMETHYL)-AMINOCARPROIC ACID N-LAUROYPHENYLALAINE N-4-TOLUENESULFONYLTRYPTOPHAN N-2-FLUOROENSULFONYLTRYPTOPHAN N-2-FLUOROSENESULFONYLVALINE N-2-FLUORENSEULFONYL-4--NITROPHENYLALANINE
Inventors
- 👤 S Toyoshima
- 👤 S Kanao
- 👤 T Toyoda
- 👤 T Suyama
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 05:27
CPC Classifications
C; C07; C07D; C07D307/00; C07D307/02; C07D307/34; C07D307/38; C07D307/52; C07D209/00; C07D209/02; C07D209/04; C07D209/10; C07D209/18; C07D209/20; C07C; C07C2603/00; C07C2603/02; C07C2603/04; C07C2603/06; C07C2603/10; C07C2603/12; C07C2603/18
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) | 1977-04-01 | 1977-10-01 | 1978-04-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-04-01 | 1981-10-01 | 1982-04-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-04-01 | 1985-10-01 | 1986-04-02 | $7700.00 | Window Closed / Lapsed |