US2737529A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Purifying pentachlorothiophenol
Assignee: EIDP Inc
•
Filing: 1954-12-01
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Granted: 1956-03-06
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Expires: 1974-12-01
Abstract
No abstract record available.
Inventors
- 👤 Bradley Harris Walton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 23:51
CPC Classifications
C; C07; C07C; C07C319/00; C07C319/26; C07C319/28
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
49 words
A PROCESS FOR PURIFYING PENTACHLOROTHIOPHENOL CONTAINING SOME BENZENE DITHIOLS, WHICH COMPRISES TREATING AN ALKALINE SOLUTION OF THE IMPURE PENTACHLOROTHIOPHENOL WITH A METAL CATION OF THE GROUP CONSISTING OF MANGANESE, IRON, COBALT, NICKEL, COPPER, CADMIUM, TIN AND LEAD, AND FILTERING THE SOLUTION TO REMOVE THE METAL SALT OF THE DITHIOLS.
Claim 2
Dependent Claim
49 words
A PROCESS FOR PURIFYING PENTACHLOROTHIOPHENOL CONTAINING SOME BENZENE DITHIOLS, WHICH COMPRISES TREATING AN ALKALINE SOLUTION OF THE IMPURE PENTACHLOROTHIOPHENOL WITH A METAL CATION OF THE GROUP CONSISTING OF MANGANESE, IRON, COBALT, NICKEL, COPPER, CADMIUM, TIN AND LEAD, AND FILTERING THE SOLUTION TO REMOVE THE METAL SALT OF THE DITHIOLS.
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) | 1959-03-06 | 1959-09-05 | 1960-03-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-03-06 | 1963-09-05 | 1964-03-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-03-06 | 1967-09-05 | 1968-03-06 | $7700.00 | Window Closed / Lapsed |