Patent US2576161A successfully refreshed from Google Patents.
US2576161A
Expired / Lapsed
US
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Process for removing halogen from a halophenol
Assignee: Universal Oil Products Co
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Filing: 1949-03-22
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Granted: 1951-11-27
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Expires: 1969-03-22
Abstract
No abstract record available.
Inventors
- 👤 Ralph B Thompson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 07:53
CPC Classifications
C; C07; C07C; C07C37/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
49 words
A PROCESS FOR REMOVING HALOGEN FROM A HALOPHENOL WHICH COMPRISES HEATING SAID HALOPHENOL AND A MOLAR EXCESS OF A WATER-CONTAINING SOLUTION OF A WATER-SOLUBLE ALKALINE SULFIDE AT A TEMPERATURE OF FROM ABOUT 150* TO ABOUT 350* C. FOR A TIME PERIOD OF FROM ABOUT 2 TO ABOUT 5 HOURS.
Claim 2
Dependent Claim
49 words
A PROCESS FOR REMOVING HALOGEN FROM A HALOPHENOL WHICH COMPRISES HEATING SAID HALOPHENOL AND A MOLAR EXCESS OF A WATER-CONTAINING SOLUTION OF A WATER-SOLUBLE ALKALINE SULFIDE AT A TEMPERATURE OF FROM ABOUT 150* TO ABOUT 350* C. FOR A TIME PERIOD OF FROM ABOUT 2 TO ABOUT 5 HOURS.
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) | 1954-11-26 | 1955-05-28 | 1955-11-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-11-26 | 1959-05-28 | 1959-11-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-11-26 | 1963-05-28 | 1963-11-27 | $7700.00 | Window Closed / Lapsed |