US3255118A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aluminum cleaning compositions
Assignee: Pennwalt Corp
•
Filing: 1961-12-29
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Granted: 1966-06-07
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Expires: 1981-12-29
Abstract
No abstract record available.
Inventors
- 👤 James W Carroll
- 👤 Harold V Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:22
CPC Classifications
C; C11; C11D; C11D3/00; C11D3/02; C11D3/04; C11D3/046; C09; C09D; C09D9/00; C11D3/06; C23; C23G; C23G1/00; C23G1/14; C23G1/22
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
114 words
A COMPOSITION FOR CLEANING ALUMINUM AND ITS ALLOYS IN AQUEOUS SOLUTION CONSISTING ESSENTIALLY BY WEIGHT OF AN ALKALI METAL TETRABORATE-35 TO 92 PARTS, AN ALKALI METAL POLYPHOSPHATE-5 TO 35 PARTS, A WATER SOLUBLE HEXAVALENT CHROMIUM COMPOUND SELECTED FROM THE GROUP CONSISTING OF CHROMIC ACID, ALKALI METAL CHROMATES AND ALKALI METAL DICHROMATES -0.3 TO 4 PARTS, AND AT LEAST ONE ORGANIC DETERGENT SELECTED FROM THE GROUP CONSISTING OF A SODIUM SALT OF A SULFONATED CONDENSATION PRODUCT OF NAPHTHALENE AND FORMALDEHYDE, AN ALKYL ARYL SULFONIC ACID AND ITS ALKALI METAL SALTS IN WHICH THE ALKYL GROUP IS C8 TO C14, THE ARYL GROUP IS BENZENE AND NAPHTALENE, AND AN ALKYL PHENOL-ETHYLENE OXIDE CONDENSATE HAVING THE FORMULA
Claim 2
Dependent Claim
114 words
A COMPOSITION FOR CLEANING ALUMINUM AND ITS ALLOYS IN AQUEOUS SOLUTION CONSISTING ESSENTIALLY BY WEIGHT OF AN ALKALI METAL TETRABORATE-35 TO 92 PARTS, AN ALKALI METAL POLYPHOSPHATE-5 TO 35 PARTS, A WATER SOLUBLE HEXAVALENT CHROMIUM COMPOUND SELECTED FROM THE GROUP CONSISTING OF CHROMIC ACID, ALKALI METAL CHROMATES AND ALKALI METAL DICHROMATES -0.3 TO 4 PARTS, AND AT LEAST ONE ORGANIC DETERGENT SELECTED FROM THE GROUP CONSISTING OF A SODIUM SALT OF A SULFONATED CONDENSATION PRODUCT OF NAPHTHALENE AND FORMALDEHYDE, AN ALKYL ARYL SULFONIC ACID AND ITS ALKALI METAL SALTS IN WHICH THE ALKYL GROUP IS C8 TO C14, THE ARYL GROUP IS BENZENE AND NAPHTALENE, AND AN ALKYL PHENOL-ETHYLENE OXIDE CONDENSATE HAVING THE FORMULA
References Cited (Backward Citations)
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US1967393A
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US1962821A
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US2741599A
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GB841257A
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US2986526A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-06-06 | 1969-12-06 | 1970-06-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-06-06 | 1973-12-06 | 1974-06-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-06-06 | 1977-12-06 | 1978-06-07 | $7700.00 | Window Closed / Lapsed |