US2913377A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aqueous electrolytic process
Assignee: Occidental Chemical Corp
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Filing: 1956-06-11
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Granted: 1959-11-17
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Expires: 1976-06-11
Abstract
No abstract record available.
Inventors
- 👤 Brown Henry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 04:55
CPC Classifications
C; C25; C25C; C25C1/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
77 words
IN AN ANODIZING PROCESS EMPLOYING ESSENTIALLY INSOLUBLE ANODES SELECTED FROM THE GROUP CONSISTNG OF ALUMINUM, MANGANESE AND LEAD AND AN AQUEOUS SOLUTION OF AN ACID SELECTED FROM THE GROUP CONSISTING OF SULFURIC, PHOSPHORIC, AND OXALIC ACIDS, THE IMPROVEMENT COMPRISING MINIMIZING THE FORMATION OF SPRAY AND MIST DURING ANODIZING BY INCORPORATING IN SAID AQUEOUS ELECTRODYTE A PERFLUORO-ALKANE SULFONIC ACID OF 6-10 CARBON ATOMS INCLUSIVE IN A QUANTITY OF PRODUCE THEREIN A CONCENTRATION OF ABOUT 0.003 TO 6 GRAMS/LITER.
Claim 2
Dependent Claim
77 words
IN AN ANODIZING PROCESS EMPLOYING ESSENTIALLY INSOLUBLE ANODES SELECTED FROM THE GROUP CONSISTNG OF ALUMINUM, MANGANESE AND LEAD AND AN AQUEOUS SOLUTION OF AN ACID SELECTED FROM THE GROUP CONSISTING OF SULFURIC, PHOSPHORIC, AND OXALIC ACIDS, THE IMPROVEMENT COMPRISING MINIMIZING THE FORMATION OF SPRAY AND MIST DURING ANODIZING BY INCORPORATING IN SAID AQUEOUS ELECTRODYTE A PERFLUORO-ALKANE SULFONIC ACID OF 6-10 CARBON ATOMS INCLUSIVE IN A QUANTITY OF PRODUCE THEREIN A CONCENTRATION OF ABOUT 0.003 TO 6 GRAMS/LITER.
References Cited (Backward Citations)
US2750334A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-11-16 | 1963-05-18 | 1963-11-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-11-16 | 1967-05-18 | 1967-11-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-11-16 | 1971-05-18 | 1971-11-17 | $7700.00 | Window Closed / Lapsed |