Patent CA1248616A successfully refreshed from Google Patents.
Patent US3267012A successfully refreshed from Google Patents.
US3267012A
Expired / Lapsed
US
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Method of recovering chlorine and hydrogen
Assignee: Metachem AG
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Filing: 1962-10-05
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Granted: 1966-08-16
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Expires: 1982-10-05
Abstract
No abstract record available.
Inventors
- 👤 Schick Josef
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 13:37
CPC Classifications
C; C25; C25B; C25B1/00; C25B1/01; C25B1/24; C25B1/26; C01; C01B; C01B3/00; C01B3/02; C01B3/06; C01B7/00; C01B7/01; C01B7/03; C01B7/04; Y; Y02; Y02E; Y02E60/00; Y02E60/30; Y02E60/36
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
89 words
A METHOD OF RECOVERING GASEOUS CHLORINE AND GASEOUS HYDROGEN FROM HYDROCHLORIC ACID, WHICH COMPRISES THE STEPS OF ABSORBING THE HYDROCHLORIC ACID IN AN AQUEOUS MEDIUM, NEUTRALIZING THE HYDROCHLORIC ACID-CONTAINING SOLUTION FORMED WITH CAUSTIC ALKALI, ELECTROLYSING THE RESULT ING ALKALI METAL CHLORIDE BRINE IN AN ELECTROLYSIS CELL HAVING ANODE AND CATHODE COMPARTMENTS SEPARATED BY A DIAPHRAGM TO EFFECT ELECTROLYTIC SEPARATION OF CHLORINE AND HYDROGEN, ALL OF THE CAUSTIC ALKALI FORMED IN THE CATHOLYTE IN SAID CATHODE COMPARTMENT DURING ELECTROLYSIS BEING RETURNED TO THE NEUTRALIZING STEP TO NEUTRALIZE THE HYDROCHLORIC ACID.
Claim 2
Independent Claim
89 words
A METHOD OF RECOVERING GASEOUS CHLORINE AND GASEOUS HYDROGEN FROM HYDROCHLORIC ACID, WHICH COMPRISES THE STEPS OF ABSORBING THE HYDROCHLORIC ACID IN AN AQUEOUS MEDIUM, NEUTRALIZING THE HYDROCHLORIC ACID-CONTAINING SOLUTION FORMED WITH CAUSTIC ALKALI, ELECTROLYSING THE RESULT ING ALKALI METAL CHLORIDE BRINE IN AN ELECTROLYSIS CELL HAVING ANODE AND CATHODE COMPARTMENTS SEPARATED BY A DIAPHRAGM TO EFFECT ELECTROLYTIC SEPARATION OF CHLORINE AND HYDROGEN, ALL OF THE CAUSTIC ALKALI FORMED IN THE CATHOLYTE IN SAID CATHODE COMPARTMENT DURING ELECTROLYSIS BEING RETURNED TO THE NEUTRALIZING STEP TO NEUTRALIZE THE HYDROCHLORIC ACID.
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) | 1969-08-15 | 1970-02-14 | 1970-08-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-15 | 1974-02-14 | 1974-08-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-15 | 1978-02-14 | 1978-08-16 | $7700.00 | Window Closed / Lapsed |