Patent US3140244A successfully refreshed from Google Patents.
US3140244A
Expired / Lapsed
US
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Removal of volatile organic materials from aqueous hydrochloric acid
Assignee: Dow Chemical Co
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Filing: 1962-10-03
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Granted: 1964-07-07
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Expires: 1982-10-03
Abstract
No abstract record available.
Inventors
- 👤 Simek Joseph
- 👤 Edwin J Strojny
- 👤 Jr Alexander H Widiger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 14:20
CPC Classifications
C; C01; C01B; C01B7/00; C01B7/01
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
74 words
A PROCESS FOR THE REMOVAL OF VOLATILE ORGANIC MATERIALS FROM AQUEOUS HYDROCHLORIC ACID COMPRISING, COUNTERCURRENTLY CONTACTING SAID AQUEOUS HYDROCHLORIC ACID WITH A GAS WHICH IS NON-REACTIVE WITH EITHER AQUEOUS HYDROCHLORIC ACID OR THE VOLATILE ORGANIC MATERIALS, IN A VOLUME RATIO OF GAS TO AQUEOUS HYDROCHLORIC ACID OF FROM 6 TO 100, THEREBY SUBSTANTIALLY REMOVING SAID VOLATILE ORGANIC MATERIALS FROM THE AQUEOUS ACID, AND RECOVERING SAID AQUEOUS HYDROCHLORIC ACID SUBSTANTIALLY FREE FROM VOLATILE ORGANIC MATERIALS.
Claim 2
Dependent Claim
74 words
A PROCESS FOR THE REMOVAL OF VOLATILE ORGANIC MATERIALS FROM AQUEOUS HYDROCHLORIC ACID COMPRISING, COUNTERCURRENTLY CONTACTING SAID AQUEOUS HYDROCHLORIC ACID WITH A GAS WHICH IS NON-REACTIVE WITH EITHER AQUEOUS HYDROCHLORIC ACID OR THE VOLATILE ORGANIC MATERIALS, IN A VOLUME RATIO OF GAS TO AQUEOUS HYDROCHLORIC ACID OF FROM 6 TO 100, THEREBY SUBSTANTIALLY REMOVING SAID VOLATILE ORGANIC MATERIALS FROM THE AQUEOUS ACID, AND RECOVERING SAID AQUEOUS HYDROCHLORIC ACID SUBSTANTIALLY FREE FROM VOLATILE ORGANIC MATERIALS.
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) | 1967-07-07 | 1968-01-06 | 1968-07-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-07-07 | 1972-01-06 | 1972-07-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-07-07 | 1976-01-06 | 1976-07-07 | $7700.00 | Window Closed / Lapsed |