US3845097A
Expired / Lapsed
US
⏱️ 0.0 years remaining
N-substituted amino acids and novel ester
Assignee: Ajinomoto Co Inc
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Filing: 1972-08-16
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Granted: 1974-10-29
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Expires: 1992-08-16
Abstract
Abstract 1. AN N-SUBSTITUTED AMINO ACID SELECTED FROM THE GROUP CONSISTING OF N-B-NAPHTHYLAMINOMETHYLLEUCINE, N-2-FLUOROENESULFONLPHENYLALANINE, N-B-NAPHTHYLAMONOMETHYLTHREONINE, AND N-9-FLUORENYLACETYLPHENYLALANINE.
Inventors
- 👤 T Toyoda
- 👤 T Suyama
- 👤 S Toyoshima
- 👤 S Kanao
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 12:19
CPC Classifications
C; C07; C07D; C07D209/00; C07D209/02; C07D209/04; C07D209/10; C07D209/18; C07D209/20; C07C; C07C311/00; C07C311/15; C07C311/16; C07C311/19; C07D307/00; C07D307/02; C07D307/34; C07D307/38; C07D307/52; C07C2603/00; C07C2603/02; C07C2603/04; C07C2603/06; C07C2603/10; C07C2603/12; C07C2603/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
15 words
AN N-SUBSTITUTED AMINO ACID SELECTED FROM THE GROUP CONSISTING OF N-B-NAPHTHYLAMINOMETHYLLEUCINE, N-2-FLUOROENESULFONLPHENYLALANINE, N-B-NAPHTHYLAMONOMETHYLTHREONINE, AND N-9-FLUORENYLACETYLPHENYLALANINE.
Claim 2
Dependent Claim
15 words
AN N-SUBSTITUTED AMINO ACID SELECTED FROM THE GROUP CONSISTING OF N-B-NAPHTHYLAMINOMETHYLLEUCINE, N-2-FLUOROENESULFONLPHENYLALANINE, N-B-NAPHTHYLAMONOMETHYLTHREONINE, AND N-9-FLUORENYLACETYLPHENYLALANINE.
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) | 1977-10-28 | 1978-04-29 | 1978-10-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-28 | 1982-04-29 | 1982-10-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-28 | 1986-04-29 | 1986-10-29 | $7700.00 | Window Closed / Lapsed |