Patent US3140245A successfully refreshed from Google Patents.
US3140245A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dulling hard aluminum oxide coatings on aluminum-rich basis metals
Assignee: Individual
•
Filing: 1961-08-23
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Granted: 1964-07-07
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Expires: 1981-08-23
Abstract
No abstract record available.
Inventors
- 👤 Gallaccio Anthony
- 👤 Reyburn W Wick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:47
CPC Classifications
C; C25; C25D; C25D11/00; C25D11/02; C25D11/04; C25D11/18; C25D11/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
55 words
A METHOD OF MINIMIZING THE REFLECTIVITY OF HARD ANODIZED ALUMINUM OXIDE COATINGS ON AN ALUMINUM-RICH BASIS METAL ARTICLE WHICH COMPRISES TREATING SAID ARTICLE WITH AN AQUEOUS SOLUTION CONSISTING ESSENTIALLY OF PHOSPHORIC ACID OF ABOUT 0.38 TO 0.57 MOLARITY, CHROMIUM TRI-OXIDE OF ABOUT 0.12 TO 0.18 MOLARITY ABOUT 0.01 WEIGHT PERCENT OF A SURFACE ACTIVE AGENT.
Claim 2
Independent Claim
55 words
A METHOD OF MINIMIZING THE REFLECTIVITY OF HARD ANODIZED ALUMINUM OXIDE COATINGS ON AN ALUMINUM-RICH BASIS METAL ARTICLE WHICH COMPRISES TREATING SAID ARTICLE WITH AN AQUEOUS SOLUTION CONSISTING ESSENTIALLY OF PHOSPHORIC ACID OF ABOUT 0.38 TO 0.57 MOLARITY, CHROMIUM TRI-OXIDE OF ABOUT 0.12 TO 0.18 MOLARITY ABOUT 0.01 WEIGHT PERCENT OF A SURFACE ACTIVE AGENT.
References Cited (Backward Citations)
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Cited
US2650156A
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US2814593A
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US2814577A
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US2909455A
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US2936254A
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US3061484A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-07-07 | 1968-01-06 | 1968-07-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-07-07 | 1972-01-06 | 1972-07-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-07-07 | 1976-01-06 | 1976-07-07 | $7700.00 | Window Closed / Lapsed |