US3471382A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for improving the operation of chloro-alkali diaphragm cells and apparatus therefor
Assignee: Hooker Chemical Corp
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Filing: 1966-12-01
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Granted: 1969-10-07
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Expires: 1986-12-01
Abstract
No abstract record available.
Inventors
- 👤 Morris P Grotheer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:15
CPC Classifications
C; C25; C25B; C25B1/00; C25B1/01; C25B1/34; C25B1/46
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
72 words
IN A METHOD FOR THE PRODUCTION OF CHLORINE AND CAUSTIC USING AN ELECTROLYTIC DIAPHRAGM CELL HAVING AN ANOLYTE COMPARTMENT AND A CATHOLYTE COMPARTMENT SEPARATED BY A POROUS DIAPHRAGM, THE IMPROVEMENT COMPRISING FEEDING BRINE SOLUTION TO THE ANOLYTE COMPARTMENT OF SAID CELL WHILE FEEDING A SUPPLEMENTAL BRINE SOLUTION FROM THE ANOLYTE COMPARTMENT THROUGH A HYDROGEN GAS WITHDRAWAL MEANS TO THE CATHOLYTE COMPARTMENT OF SAID CELL IN EXCESS OF THE FLOW THROUGH THE DIAPHRAGM.
Claim 2
Dependent Claim
72 words
IN A METHOD FOR THE PRODUCTION OF CHLORINE AND CAUSTIC USING AN ELECTROLYTIC DIAPHRAGM CELL HAVING AN ANOLYTE COMPARTMENT AND A CATHOLYTE COMPARTMENT SEPARATED BY A POROUS DIAPHRAGM, THE IMPROVEMENT COMPRISING FEEDING BRINE SOLUTION TO THE ANOLYTE COMPARTMENT OF SAID CELL WHILE FEEDING A SUPPLEMENTAL BRINE SOLUTION FROM THE ANOLYTE COMPARTMENT THROUGH A HYDROGEN GAS WITHDRAWAL MEANS TO THE CATHOLYTE COMPARTMENT OF SAID CELL IN EXCESS OF THE FLOW THROUGH THE DIAPHRAGM.
Claim 3
Dependent Claim
65 words
A CHLOR-ALKALI DIAPHRAGM CELL COMPRISING AN ANODE AND A CATHODE SEPARATED BY A POROUS DIAPHRAGM THEREBY FORMING AN ANOLYTE COMPARTMENT AND A CATHOLYTE COMPARTMENT, A HYDROGEN GAS WITHDRAWAL MEANS IN COMMUNICATION WITH SAID CATHOLYTE COMPARTMENT, A LIQUID PASSAGE MEANS COMMUNICATING BETWEEN SAID ANOLYTE COMPARTMENT AND SAID HYDROGEN GAS WITHDRAWAL MEANS FOR THE PASSAGE OF ANOLYTE LIQUOR TO THE CATHOLYTE COMPARTMENT WITHOUT PASSING THROUGH SAID DIAPHRAGM.
Claim 4
Dependent Claim
65 words
A CHLOR-ALKALI DIAPHRAGM CELL COMPRISING AN ANODE AND A CATHODE SEPARATED BY A POROUS DIAPHRAGM THEREBY FORMING AN ANOLYTE COMPARTMENT AND A CATHOLYTE COMPARTMENT, A HYDROGEN GAS WITHDRAWAL MEANS IN COMMUNICATION WITH SAID CATHOLYTE COMPARTMENT, A LIQUID PASSAGE MEANS COMMUNICATING BETWEEN SAID ANOLYTE COMPARTMENT AND SAID HYDROGEN GAS WITHDRAWAL MEANS FOR THE PASSAGE OF ANOLYTE LIQUOR TO THE CATHOLYTE COMPARTMENT WITHOUT PASSING THROUGH SAID DIAPHRAGM.
References Cited (Backward Citations)
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Cited
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US3364127A
Cited
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Cited
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Cited
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Cited
US3403083A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-10-06 | 1973-04-07 | 1973-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-10-06 | 1977-04-07 | 1977-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-10-06 | 1981-04-07 | 1981-10-07 | $7700.00 | Window Closed / Lapsed |