US3795595A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrolytic production of tin and lead salts using anion permselective membranes
Assignee: Arkema Inc
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Filing: 1971-07-29
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Granted: 1974-03-05
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Expires: 1991-07-29
Abstract
Abstract TIN AND LEAD SALTS E.G., STANNOUS SULFATE, ARE PRODUCED ELECTROLYTICALLY NY ANODICALLY DISSOLVING TIN OR LEAD INTO AN ELCTROLYTE IN WHICH THE TIN OR LEAD SALT IS SOLUBLE WHILE SIMULTANEOUSLY SUBSTANTIALLY PREVENTING MIGRATION OF TIN OR LEAD CATIONS FROM THE ANOE TO THE CATHODE BY MAINTAINING AN ANION PERMSELECTIVE BARRIER BETWEEN THE ANODE AND THE CATHODE, AND THEN RECOVERING THE TIN OR LEAD SALT FROM THE ELECTROLYTE.
Inventors
- 👤 H Wilson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 22:36
CPC Classifications
C; C25; C25B; C25B1/00; C01; C01B; C01B35/00; C01B35/06; C01G; C01G19/00; C01G19/04; C01G21/00; C25B1/01
Claims Analysis
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-03-04 | 1977-09-03 | 1978-03-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-03-04 | 1981-09-03 | 1982-03-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-03-04 | 1985-09-03 | 1986-03-05 | $7700.00 | Window Closed / Lapsed |