US3723273A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrodialytic production of stannic oxide sol
Assignee: M&T Chemicals Inc
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Filing: 1971-09-24
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Granted: 1973-03-27
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Expires: 1991-09-24
Abstract
Abstract STANNIC OXIDE SOL IS PRODUCED BY ELECTRODIALYTICALLY TRANSFERRING METAL CATIONS OF A WATER-SOLUBLE STANNATE, SUCH AS POTASSIUM STANNATE, FROM THE ANODE COMPARTMENT OF AN ELECTROLYTIC CELL TO THE CATHODE COMPARTMENT WHILE SIMYLTANEOUSLY SUBSTANTIALLY PREVENTING MIGRATION OF TIN ANIONS FROM THE ANODE COMPARTMENT TO THE CATHODE COMPARTMENT BY MAINTAINING A CATION PERMSELECTIVE DIALYTIC MEMBRANE BETWEEN THE ANODE AND THE CATHODE.
Inventors
- 👤 H Wilson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 01:03
CPC Classifications
B; B01; B01D; B01D61/00; B01D61/42; B01D61/44; C; C01; C01G; C01G19/00; C01G19/02
Claims Analysis
Total Claims: 0
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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) | 1976-03-26 | 1976-09-25 | 1977-03-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-03-26 | 1980-09-25 | 1981-03-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-03-26 | 1984-09-25 | 1985-03-27 | $7700.00 | Window Closed / Lapsed |