US2987417A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pigmenting aluminum oxide coating
Assignee: Alcoa Corp
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Filing: 1958-06-23
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Granted: 1961-06-06
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Expires: 1978-06-23
Abstract
No abstract record available.
Inventors
- 👤 William C Cochran
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:49
CPC Classifications
C; C23; C23C; C23C22/00; C23C22/82; C23C22/84; C25; C25D; C25D11/00; C25D11/02; C25D11/04; C25D11/18; C25D11/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
59 words
THE METHOD OF PIGMENTING AN ALUMINUM ARTICLE HAVING ON ITS SURFACE AN ARTIFICIALLY PRODUCED OXIDE COATING, COMPRISING IMMERSING THE COATED ARTICLE IN AN AQUEOUS SOLUTION CONTAINING AT LEAST ONE CHROMIC SALT FROM THE GROUP CONSISTING OF CHROMIC BISULFITE, CHROMIC OXALATE AND CHROMIC FORMATE, WHEREBY SAID OXIDE COATING IS IMPREGNATED AND COLORED WITH CHROMIC OXIDE PIGMENT PRECIPITATED FROM SAID SOLUTION.
Claim 2
Independent Claim
59 words
THE METHOD OF PIGMENTING AN ALUMINUM ARTICLE HAVING ON ITS SURFACE AN ARTIFICIALLY PRODUCED OXIDE COATING, COMPRISING IMMERSING THE COATED ARTICLE IN AN AQUEOUS SOLUTION CONTAINING AT LEAST ONE CHROMIC SALT FROM THE GROUP CONSISTING OF CHROMIC BISULFITE, CHROMIC OXALATE AND CHROMIC FORMATE, WHEREBY SAID OXIDE COATING IS IMPREGNATED AND COLORED WITH CHROMIC OXIDE PIGMENT PRECIPITATED FROM SAID SOLUTION.
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) | 1964-06-05 | 1964-12-05 | 1965-06-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-06-05 | 1968-12-05 | 1969-06-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-06-05 | 1972-12-05 | 1973-06-06 | $7700.00 | Window Closed / Lapsed |