US2829095A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the production of acidic and alkaline solution from salt solution by multi-compartment electrolysis
Assignee: NOGUCHI KENKYU JO
•
Filing: 1956-08-23
•
Granted: 1958-04-01
•
Expires: 1976-08-23
Abstract
No abstract record available.
Inventors
- 👤 Oda Kenichi
- 👤 Murakoshi Masahiko
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 04:10
CPC Classifications
B; B01; B01D; B01D61/00; B01D61/42; B01D61/44; B01D61/445
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
209 words
A PROCESS FOR THE PRODUCTION OF ACIDIC AND ALKALINE SOLUTION FROM SALT SOLUTION BY MULTI-COMPARTMENT ELECTROLYSIS, WHICH COMPRISES ARRANGING A PLURALITY OF MEMBRANE GROUPS IN SERIES IN AN ELECTROLYTIC CELL, EACH GROUP CONSISTING OF AN ANION EXCHANGE MEMBRANE, A CATION EXCHANGE MEMBRANE AND AN ANION EXCHANGE MEMBRANES OF AN ACID-BASE DOUBLE MEMBRANE, BOTH THE MEMBRANES OF SAID DOUBLE MEMBRANE, BEING MADE TO BE IN CLOSE CONTACT WITH EACH OTHER, AND A CATION EXCHANGE MEMBRANE WHICH ARE SUCCESSIVELY ARRANGED IN SERIES IN THE ABOVE-MENTIONED ORDER SO AS TO FORM AN ELECTROLYTIC COMPARTMENT BETWEEN EACH MEMBRANE AND ITS ADJACENT MEMBRANE, AND CARRYING OUT ELECTROLYSIS BY FEEDING DIRECT ELECTRIC CURRENT FROM AN ELECTRODE ARRANGED AT ONE END COMPARTMENT OF SAID ELECTROLYTIC CELL TO THE OTHER ELECTRODE ARRANGED AT THE OTHER END COMPARTMENT OF SAID CELL SAID CURRENT BEING DIRECTED FROM THE ANION EXCHANGE MEMBRANE SIDE OF THE DOUBLE MEMBRANE TOWARDS THE CATION EXCHANGE MEMBRANE SIDE OF SAID DOUBLE MEMBRANE, WHILE CHARGING THE STARTING SALT SOLUTION INTO THE ELECTROLYTIC COMPARTMENTS FORMED BETWEEN THE ANION AND CATION EXCHANGE MEMBRANES, THUS PRODUCING ACIDIC SOLUTION IN EACH ELECTROLYTIC COMPARTMENT FORMED BETWEEN THE ANION EXCHANGE MEMBRANE AND THE DOUBLE MEMBRANE, AND PRODUCING ALKALINE SOLUTION IN EACH ELECTROLYTIC COMPARTMENT BETWEEN THE DOUBLE MEMBRANE AND THE CATION EXCHANGE MEMBRANE.
Claim 2
Dependent Claim
209 words
A PROCESS FOR THE PRODUCTION OF ACIDIC AND ALKALINE SOLUTION FROM SALT SOLUTION BY MULTI-COMPARTMENT ELECTROLYSIS, WHICH COMPRISES ARRANGING A PLURALITY OF MEMBRANE GROUPS IN SERIES IN AN ELECTROLYTIC CELL, EACH GROUP CONSISTING OF AN ANION EXCHANGE MEMBRANE, A CATION EXCHANGE MEMBRANE AND AN ANION EXCHANGE MEMBRANES OF AN ACID-BASE DOUBLE MEMBRANE, BOTH THE MEMBRANES OF SAID DOUBLE MEMBRANE, BEING MADE TO BE IN CLOSE CONTACT WITH EACH OTHER, AND A CATION EXCHANGE MEMBRANE WHICH ARE SUCCESSIVELY ARRANGED IN SERIES IN THE ABOVE-MENTIONED ORDER SO AS TO FORM AN ELECTROLYTIC COMPARTMENT BETWEEN EACH MEMBRANE AND ITS ADJACENT MEMBRANE, AND CARRYING OUT ELECTROLYSIS BY FEEDING DIRECT ELECTRIC CURRENT FROM AN ELECTRODE ARRANGED AT ONE END COMPARTMENT OF SAID ELECTROLYTIC CELL TO THE OTHER ELECTRODE ARRANGED AT THE OTHER END COMPARTMENT OF SAID CELL SAID CURRENT BEING DIRECTED FROM THE ANION EXCHANGE MEMBRANE SIDE OF THE DOUBLE MEMBRANE TOWARDS THE CATION EXCHANGE MEMBRANE SIDE OF SAID DOUBLE MEMBRANE, WHILE CHARGING THE STARTING SALT SOLUTION INTO THE ELECTROLYTIC COMPARTMENTS FORMED BETWEEN THE ANION AND CATION EXCHANGE MEMBRANES, THUS PRODUCING ACIDIC SOLUTION IN EACH ELECTROLYTIC COMPARTMENT FORMED BETWEEN THE ANION EXCHANGE MEMBRANE AND THE DOUBLE MEMBRANE, AND PRODUCING ALKALINE SOLUTION IN EACH ELECTROLYTIC COMPARTMENT BETWEEN THE DOUBLE MEMBRANE AND THE CATION EXCHANGE MEMBRANE.
References Cited (Backward Citations)
US2502614A
Cited
US2721171A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-03-31 | 1961-09-30 | 1962-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-03-31 | 1965-09-30 | 1966-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-03-31 | 1969-09-30 | 1970-04-01 | $7700.00 | Window Closed / Lapsed |