Patent BE516642A successfully refreshed from Google Patents.
Patent US2945880A successfully refreshed from Google Patents.
US2945880A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the preparation of thioglycolic acid and salts thereof
Assignee: Ethyl Corp
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Filing: 1957-12-23
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Granted: 1960-07-19
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Expires: 1977-12-23
Abstract
No abstract record available.
Inventors
- 👤 Pree David O De
- 👤 William R Eller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 23:19
CPC Classifications
C; C07; C07C; C07C323/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
58 words
A PROCESS FOR THE PREPARATION OF METAL SALTS OF THIOGLYCOLIC ACID WHICH COMPRISES REACTING AN ALPHAMETALLO-METALLIC ACETATE CONTAINING TWO CARBON ATOMS WHEREIN SAID METALLO AND METALLIC ELEMENTS ARE SELECTED FROM THE GROUP CONSISTING OF ALKALI AND ALKALINE EARTH METALS WHICH SULFUR AT A TEMPERATURE BETWEEN ABOUT 100 TO 250*C. IN THE PRESENCE OF A SOLVENT FOR THE SULFUR,
Claim 2
Dependent Claim
58 words
A PROCESS FOR THE PREPARATION OF METAL SALTS OF THIOGLYCOLIC ACID WHICH COMPRISES REACTING AN ALPHAMETALLO-METALLIC ACETATE CONTAINING TWO CARBON ATOMS WHEREIN SAID METALLO AND METALLIC ELEMENTS ARE SELECTED FROM THE GROUP CONSISTING OF ALKALI AND ALKALINE EARTH METALS WHICH SULFUR AT A TEMPERATURE BETWEEN ABOUT 100 TO 250*C. IN THE PRESENCE OF A SOLVENT FOR THE SULFUR,
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) | 1963-07-19 | 1964-01-18 | 1964-07-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-07-19 | 1968-01-18 | 1968-07-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-07-19 | 1972-01-18 | 1972-07-19 | $7700.00 | Window Closed / Lapsed |