Patent US2904475A successfully refreshed from Google Patents.
US2904475A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for separating benzene hexachloride, hydrochloric acid, and an alcohol by distillation
Assignee: Pennwalt Corp
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Filing: 1957-01-14
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Granted: 1959-09-15
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Expires: 1977-01-14
Abstract
No abstract record available.
Inventors
- 👤 Iii Thomas Robert Bell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 06:32
CPC Classifications
C; C07; C07C; C07C17/00; C07C17/38
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
76 words
THE PROCESS FOR THE REMOVAL OF HYDROCHLORIC ACID FROM ACID BENZENE HEXACHLORIDE ALCOHOL MIXTURES IN WHICH THE ALCOHOL IS SELECTED FROM THE GROUP CONSISTING OF METHYL AND ETHYL WHICH COMPRISES DISTILLING THE ACID BENZENE HEXACHLORIDE ALCOHOL MIXTURE IN THE PRESENCE OF WATER UNDR REFLUX CONDITIONS, WITHDRAWING SUBSTANTIALLY ALL OF THE ALCOHOL AS A VAPOR FROM THE SAID DISTILLING MIXTURE, DISCONTINUING THE SAID DISTILLATION AND THEREAFTER SEPARATING THE RESIDUAL BENZENE HEXACHLORIDE FROM THE RESIDUAL AQUEOUS ACID MATERIAL.
Claim 2
Dependent Claim
76 words
THE PROCESS FOR THE REMOVAL OF HYDROCHLORIC ACID FROM ACID BENZENE HEXACHLORIDE ALCOHOL MIXTURES IN WHICH THE ALCOHOL IS SELECTED FROM THE GROUP CONSISTING OF METHYL AND ETHYL WHICH COMPRISES DISTILLING THE ACID BENZENE HEXACHLORIDE ALCOHOL MIXTURE IN THE PRESENCE OF WATER UNDR REFLUX CONDITIONS, WITHDRAWING SUBSTANTIALLY ALL OF THE ALCOHOL AS A VAPOR FROM THE SAID DISTILLING MIXTURE, DISCONTINUING THE SAID DISTILLATION AND THEREAFTER SEPARATING THE RESIDUAL BENZENE HEXACHLORIDE FROM THE RESIDUAL AQUEOUS ACID MATERIAL.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-09-14 | 1963-03-16 | 1963-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-09-14 | 1967-03-16 | 1967-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-09-14 | 1971-03-16 | 1971-09-15 | $7700.00 | Window Closed / Lapsed |