Patent US1123793A successfully refreshed from Google Patents.
Patent US4879370A successfully refreshed from Google Patents.
US4879370A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Glutathione delivery system
Assignee: Cornell Research Foundation Inc
•
Filing: 1988-07-27
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Granted: 1989-11-07
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Expires: 2008-07-27
Abstract
Abstract Substantially pure alkyl monoesters of glutathione, the ester being of the glycine carboxylic acid, and use thereof to increase cellular levels of glutathione.
Inventors
- 👤 Alton Meister
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 14:47
CPC Classifications
C; C07; C07K; C07K5/00; C07K5/02; C07K5/0215
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
11 words
Substantially pure monomethyl glutathione, only the glycine carboxyl group being esterified.
Claim 2
Dependent Claim
11 words
Substantially pure monomethyl glutathione, only the glycine carboxyl group being esterified.
Claim 3
Dependent Claim
11 words
Substantially pure monoethyl glutathione, only the glycine carboxyl group being esterified.
Claim 4
Dependent Claim
11 words
Substantially pure monoethyl glutathione, only the glycine carboxyl group being esterified.
Claim 5
Dependent Claim
16 words
Substantially pure monoalkyl (C 3 to C 10 ) glutathione, only the glycine carboxyl being esterified.
Claim 6
Dependent Claim
16 words
Substantially pure monoalkyl (C 3 to C 10 ) glutathione, only the glycine carboxyl being esterified.
References Cited (Backward Citations)
US4709013A
Cited
JPH108399A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-11-06 | 1993-05-08 | 1993-11-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-11-06 | 1997-05-08 | 1997-11-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-11-06 | 2001-05-08 | 2001-11-07 | $7700.00 | Window Closed / Lapsed |