US2702799A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Recovery of glutathione
Assignee: SCHWARZ LAB Inc
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Filing: 1950-11-17
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Granted: 1955-02-22
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Expires: 1970-11-17
Abstract
No abstract record available.
Inventors
- 👤 Laufer Louis
- 👤 Lionel C Reed
- 👤 Gutcho Sidney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 13:22
CPC Classifications
C; C12; C12N; C12N1/00; C12N1/06; C12N1/063; C07; C07K; C07K5/00; C07K5/02; C07K5/0215
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
78 words
THE PROCESS FOR RECOVERY OF GLUTATHIONE FROM BIOLOGICAL EXTRACTS CONTAINING THE SAME, BY REACTING THE EXTRACT WITH CUPROUS SULFITE, WITH RESULTANT PRECIPITATION OF CUPROUS GLUTATHIONE SALT AND LIBERATION OIF SULFUROUS ACID THAT SERVES TO MAINTAIN SAID PRECIPITATE IN A REDUCING ENVIRONMENT, SUSPENDING THE PRECIPITATE IN WATER AND TREATING THE SUSPENSION WITH HYDROGEN SULFIDE, WITH DECOMPOSITION OF THE SALT TO RELEASE THE GLUTATHIONE, FILTERING OFF THE RESULTANT PRECIPITATE OF COPPER SULFIDE, CONCENTRATING THE FILTRATE AND CRYSTALLIZING OUT THE GLUTATHIONE.
Claim 2
Dependent Claim
78 words
THE PROCESS FOR RECOVERY OF GLUTATHIONE FROM BIOLOGICAL EXTRACTS CONTAINING THE SAME, BY REACTING THE EXTRACT WITH CUPROUS SULFITE, WITH RESULTANT PRECIPITATION OF CUPROUS GLUTATHIONE SALT AND LIBERATION OIF SULFUROUS ACID THAT SERVES TO MAINTAIN SAID PRECIPITATE IN A REDUCING ENVIRONMENT, SUSPENDING THE PRECIPITATE IN WATER AND TREATING THE SUSPENSION WITH HYDROGEN SULFIDE, WITH DECOMPOSITION OF THE SALT TO RELEASE THE GLUTATHIONE, FILTERING OFF THE RESULTANT PRECIPITATE OF COPPER SULFIDE, CONCENTRATING THE FILTRATE AND CRYSTALLIZING OUT THE GLUTATHIONE.
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) | 1958-02-21 | 1958-08-23 | 1959-02-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-02-21 | 1962-08-23 | 1963-02-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-02-21 | 1966-08-23 | 1967-02-22 | $7700.00 | Window Closed / Lapsed |