US2941929A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrolytes
Assignee: RALPH F BURKARD
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Filing: 1955-08-24
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Granted: 1960-06-21
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Expires: 1975-08-24
Abstract
No abstract record available.
Inventors
- 👤 Lilienfeld Julius Edgar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 14:22
CPC Classifications
H; H01; H01G; H01G9/00; H01G9/0029; H01G9/0032; C; C25; C25D; C25D11/00; C25D11/02; H01G9/004; H01G9/022
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
83 words
AN ESSENTIALLY NON-AQUEOUS COMPOSITION FOR ANODIZING AND MAINTAINING FILMS ON METALS CONSISTING ESSENTIALLY OF A SUBSTANTIALLY INSULATING ORGANIC COMPOUND OF THE ALDEHYDE GROUP HAVING NO LESS THAN FOUR AND NO MORE THAN SEVEN CARBON ATOMS AS SOLVENT, AND A BINARY SOLUTE CONTAINING A WEAK ACID OF THE HYDROXY BENZENE CLASS AND AN ALKALI METAL COMPOUND, THE SOLVENT HAVING AT LEAST ONE COMPONENT THE DIELECTRIC CONSTANT OF WHICH IS SIGNIFICANTLY IN EXCESS OF THE DIELECTRIC CONSTANT OF THE WEAK ACID COMPONENT OF THE SOLUTE.
Claim 2
Dependent Claim
83 words
AN ESSENTIALLY NON-AQUEOUS COMPOSITION FOR ANODIZING AND MAINTAINING FILMS ON METALS CONSISTING ESSENTIALLY OF A SUBSTANTIALLY INSULATING ORGANIC COMPOUND OF THE ALDEHYDE GROUP HAVING NO LESS THAN FOUR AND NO MORE THAN SEVEN CARBON ATOMS AS SOLVENT, AND A BINARY SOLUTE CONTAINING A WEAK ACID OF THE HYDROXY BENZENE CLASS AND AN ALKALI METAL COMPOUND, THE SOLVENT HAVING AT LEAST ONE COMPONENT THE DIELECTRIC CONSTANT OF WHICH IS SIGNIFICANTLY IN EXCESS OF THE DIELECTRIC CONSTANT OF THE WEAK ACID COMPONENT OF THE SOLUTE.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-06-21 | 1963-12-21 | 1964-06-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-06-21 | 1967-12-21 | 1968-06-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-06-21 | 1971-12-21 | 1972-06-21 | $7700.00 | Window Closed / Lapsed |