Patent US1531308A successfully refreshed from Google Patents.
US3971828A
Expired / Lapsed
US
⏱️ 0.0 years remaining
N-(mercaptoacyl)aminoacids
Assignee: Santen Pharmaceutical Co Ltd
•
Filing: 1974-12-23
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Granted: 1976-07-27
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Expires: 1994-12-23
Abstract
Abstract Compounds useful for prophylaxis and therapy in treating a metabolic disorder, such as nosotoxicosis due to a heavy metal radiation disorder, diabetes or hepatitis. ##EQU1## and intermediates therefor are disclosed.
Inventors
- 👤 Itaru Mita
- 👤 Shigeo Okumura
- 👤 Shigeru Yamabe
- 👤 Yoshihiko Funae
- 👤 Junzo Matumoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:24
CPC Classifications
C; C07; C07C; C07C51/00; C07C51/58; C07C51/60
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
1 words
N-(2-mercaptopropionyl)β-alanine.
Claim 2
Dependent Claim
1 words
N-(2-mercaptopropionyl)β-alanine.
Claim 3
Dependent Claim
2 words
N-(2-mercaptopropionyl)5-aminocaproic acid.
Claim 4
Dependent Claim
2 words
N-(2-mercaptopropionyl)5-aminocaproic acid.
References Cited (Backward Citations)
US3246025A
Cited
GB1023003A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-07-27 | 1980-01-26 | 1980-07-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-07-27 | 1984-01-26 | 1984-07-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-07-27 | 1988-01-26 | 1988-07-27 | $7700.00 | Window Closed / Lapsed |