US2841243A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Purification of hydrogen chloride
Assignee: Occidental Chemical Corp
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Filing: 1957-06-26
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Granted: 1958-07-01
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Expires: 1977-06-26
Abstract
No abstract record available.
Inventors
- 👤 Hooker Thomas
- 👤 Emil J Geering
- 👤 Aylmer H Maude
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 06:46
CPC Classifications
B; B01; B01D; B01D53/00; B01D53/14; B01D53/1493
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
94 words
A PROCESS FOR RECOVERING HYDROGEN CHLORIDE FROM A GASEOUS MIXTURE CONTAINING HYDROGEN CHLORDIE, CHLORINE AND ORGANIC VAPORS WHICH COMPRISES: SCRUBBING IN A FIRST ZONE, SAID GASEOUS MIXTURE WITH A LOW BOILING, HALOGENATED SOLVENT TO REMOVE CHLORINE AND ORGANIC VAPORS FOR RECOVERY, THEREAFTER SCRUBBING IN A SECOND ZONE THE EFFLUENT GAS MIXTURE FROM THE FIRST ZONE, WHICH MIXTURE CONTAINS FIRST ZONE SOLVENT AND HYDROGEN CHLORIDE, WITH A SOLVENT HAVING A HIGHER BOILING POINT THAN SAID FIRST ZONE SOLVENT, THEREBY SEPARATING THE LOW BOILING FIRST ZONE SOLVENT FROM THE HYDROGEN CHLORIDE OF SAID EFFLUENT GAS MIXTURE.
Claim 2
Dependent Claim
94 words
A PROCESS FOR RECOVERING HYDROGEN CHLORIDE FROM A GASEOUS MIXTURE CONTAINING HYDROGEN CHLORDIE, CHLORINE AND ORGANIC VAPORS WHICH COMPRISES: SCRUBBING IN A FIRST ZONE, SAID GASEOUS MIXTURE WITH A LOW BOILING, HALOGENATED SOLVENT TO REMOVE CHLORINE AND ORGANIC VAPORS FOR RECOVERY, THEREAFTER SCRUBBING IN A SECOND ZONE THE EFFLUENT GAS MIXTURE FROM THE FIRST ZONE, WHICH MIXTURE CONTAINS FIRST ZONE SOLVENT AND HYDROGEN CHLORIDE, WITH A SOLVENT HAVING A HIGHER BOILING POINT THAN SAID FIRST ZONE SOLVENT, THEREBY SEPARATING THE LOW BOILING FIRST ZONE SOLVENT FROM THE HYDROGEN CHLORIDE OF SAID EFFLUENT GAS MIXTURE.
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) | 1961-06-30 | 1961-12-30 | 1962-07-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-06-30 | 1965-12-30 | 1966-07-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-06-30 | 1969-12-30 | 1970-07-01 | $7700.00 | Window Closed / Lapsed |