US4053376A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrolytic production of hydrogen iodide
Assignee: PPG Industries Inc
•
Filing: 1976-10-27
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Granted: 1977-10-11
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Expires: 1996-10-27
Abstract
Abstract Disclosed is a method of producing aqueous iodide solutions. According to the disclosed method, iodine is electrolyzed in an aqueous catholyte and hydrogen iodide is formed.
Inventors
- 👤 William W. Carlin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 16:26
CPC Classifications
C; C25; C25B; C25B1/00; C25B1/01; C25B1/24
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
57 words
A method of producing hydrogen iodide comprising the steps of: providing an aqueous catholyte liquor containing a solubilizing amount of hydrogen iodide; providing an electrically conductive anolyte liquor; feeding iodine to the catholyte liquor; and passing an electrical current from an anode through said anolyte liquor and catholyte liquor to a cathode whereby to evolve hydrogen iodide.
Claim 2
Independent Claim
57 words
A method of producing hydrogen iodide comprising the steps of: providing an aqueous catholyte liquor containing a solubilizing amount of hydrogen iodide; providing an electrically conductive anolyte liquor; feeding iodine to the catholyte liquor; and passing an electrical current from an anode through said anolyte liquor and catholyte liquor to a cathode whereby to evolve hydrogen iodide.
Claim 3
Dependent Claim
13 words
The method of claim 1 wherein said anolyte liquor is an aqueous acid.
Claim 4
Dependent Claim
19 words
The method of claim 1 wherein said catholyte liquor contains at least 1.0 gram per liter of hydrogen iodide.
Claim 5
Dependent Claim
20 words
The method of claim 1 comprising maintaining a cation selective permionic membrane between the anolyte liquor and the catholyte liquor.
Claim 6
Dependent Claim
12 words
The method of claim 1 comprising feeding solid iodine to the catholyte.
Claim 7
Independent Claim
54 words
A method of producing hydrogen iodide comprising the steps of: providing an aqueous catholyte liquor containing iodine; providing an electrically conductive anolyte liquor separated from said catholyte by a permionic membrane; and passing an electrical current from an anode through said anolyte liquor and catholyte liquor to a cathode whereby to evolve hydrogen iodide.
Claim 8
Independent Claim
54 words
A method of producing hydrogen iodide comprising the steps of: providing an aqueous catholyte liquor containing iodine; providing an electrically conductive anolyte liquor separated from said catholyte by a permionic membrane; and passing an electrical current from an anode through said anolyte liquor and catholyte liquor to a cathode whereby to evolve hydrogen iodide.
Claim 9
Dependent Claim
13 words
The method of claim 6 wherein said anolyte liquor is an aqueous acid.
Claim 10
Dependent Claim
16 words
The method of claim 6 wherein said catholyte liquor contains a solubilizing amount of hydrogen iodide.
Claim 11
Independent Claim
26 words
A method of producing hydrogen iodide comprising passing an electrical current through an aqueous anolyte liquor to an aqueous catholyte liquor which catholyte liquor contains iodine.
Claim 12
Independent Claim
26 words
A method of producing hydrogen iodide comprising passing an electrical current through an aqueous anolyte liquor to an aqueous catholyte liquor which catholyte liquor contains iodine.
Claim 13
Dependent Claim
19 words
The method of claim 9 wherein said anolyte liquor is separated from said catholyte liquor by a permionic membrane.
Claim 14
Dependent Claim
13 words
The method of claim 9 wherein said anolyte liquor is an aqueous acid.
Claim 15
Dependent Claim
12 words
The method of claim 9 wherein said catholyte liquor contains hydrogen iodide.
References Cited (Backward Citations)
US448541A
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US3165460A
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US3726937A
Cited
US3761579A
Cited
US3787304A
Cited
US3848065A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-10-10 | 1981-04-11 | 1981-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-10-10 | 1985-04-11 | 1985-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-10-10 | 1989-04-11 | 1989-10-11 | $7700.00 | Window Closed / Lapsed |