Patent US2909470A successfully refreshed from Google Patents.
US2909470A
Expired / Lapsed
US
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Electrochemical method and solution therefor
Assignee: Lanteris Space LLC
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Filing: 1957-01-22
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Granted: 1959-10-20
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Expires: 1977-01-22
Abstract
No abstract record available.
Inventors
- 👤 Paul F Schmidt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:21
CPC Classifications
C; C25; C25D; C25D11/00; C25D11/02; C25D11/32; Y; Y10; Y10S; Y10S204/00; Y10S204/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
57 words
A SOLUTION FOR THE ELECTROLYTIC PRODUCTION OF OXIDE LAYERS UPON METALLIC OR SEMICONDUCTIVE BODIES, SAID SOLUTION CONSISTING ESSENTIALLY OF N-METHYL ACETAMIDE AS A MAJOR CONSTITUENT AND AS A MINOR CONSTITUENT A SUBSTANCE SELECTED FROM THE GROUP CONSISTING OF AMMONIUM SULFATE, ALUMINUM SULFATE, A COMPOUND SUPPLYING NITRATE IONS TO SAID SOLUTION, HYDROGEN PEROXIDE, PHOSPHORUS PENTOXIDE AND ACETIC ANHYDRIDE.
Claim 2
Dependent Claim
57 words
A SOLUTION FOR THE ELECTROLYTIC PRODUCTION OF OXIDE LAYERS UPON METALLIC OR SEMICONDUCTIVE BODIES, SAID SOLUTION CONSISTING ESSENTIALLY OF N-METHYL ACETAMIDE AS A MAJOR CONSTITUENT AND AS A MINOR CONSTITUENT A SUBSTANCE SELECTED FROM THE GROUP CONSISTING OF AMMONIUM SULFATE, ALUMINUM SULFATE, A COMPOUND SUPPLYING NITRATE IONS TO SAID SOLUTION, HYDROGEN PEROXIDE, PHOSPHORUS PENTOXIDE AND ACETIC ANHYDRIDE.
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) | 1962-10-19 | 1963-04-20 | 1963-10-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-10-19 | 1967-04-20 | 1967-10-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-10-19 | 1971-04-20 | 1971-10-20 | $7700.00 | Window Closed / Lapsed |