Patent US3759805A successfully refreshed from Google Patents.
US3759805A
Expired / Lapsed
US
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Electrolytic treatment of filamentary carbon material
Assignee: Akzo Nobel UK PLC
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Filing: 1970-03-18
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Granted: 1973-09-18
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Expires: 1990-03-18
Abstract
Abstract A PROCESS FOR TREATING THE SURFACE OF FILAMENTARY CARBON WHICH COMPRISES MAKING THE FILAMENTARY CARBON THE ANODE OF AN ELECTROLYTIC CELL, EMPLOYING AS THE ELECTROLYTE AN AQUEOUS SOLUTION OF A SOLUE, FOR EXAMPLE IN ALKALI METAL HYDROXIDE, ADAPTED TO GENERATE OXYGEN AT THE ANODE DURING ELECTROLYSIS, AND ELECTROLYSING THE ELECTROLYTE. THE TREATMENT MAY BE CARRIED OUT AS A BATCH PROCESS OR A CONTINUOUS PROCESS.
Inventors
- 👤 D Chapman
- 👤 Paterson W Crawford
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 13:05
CPC Classifications
D; D01; D01F; D01F11/00; D01F11/10; D01F11/12; D01F11/16
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) | 1976-09-17 | 1977-03-19 | 1977-09-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-17 | 1981-03-19 | 1981-09-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-17 | 1985-03-19 | 1985-09-18 | $7700.00 | Window Closed / Lapsed |