US3841891A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing colored aluminum
Assignee: Horizons Research Inc
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Filing: 1972-10-27
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Granted: 1974-10-15
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Expires: 1992-10-27
Abstract
Abstract Anodized aluminum articles which are colored in selected areas and the method of manufacturing such articles. The articles may be sheets or plates used to identify or decorate or they can be displays or containers. More than a single color may be present in the final article.
Inventors
- 👤 J Pallant
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:49
CPC Classifications
G; G03; G03F; G03F7/00
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
119 words
A PROCESS FOR PRODUCING ANODIZED ALUMINUM ARTICLES IN WHICH SELECTED SURFACE AREAS ARE COLORED, WHICH COMPRISES: PREHEATING AND USEALED, DYED ANODIZED ARTICLE, LAMINATING THE PREHEATING ANODIZED ARTICLE TO A TRANSPARENT PHOTOPOLYMERIZABLE MATERIAL, CURING THE RESULTING LAMINATE, EXPOSING THE PHOTOPOLYMERIZABLE MATERIAL TO A PATTERN OF SUITABLE RADIATION SUFFICIENT TO EFFECT THE POLYMERIZATION OF AREAS EXPOSED TO SAID RADIATION, DEVELOPING THE RESULTING RESIST BY APPLYING A SOLVENT FOR THE UNPOLYMERIZED, PHTOPOLYMERIZABLE MATERIAL, TO THE SURFACE OF THE ARTICLE AFTER SAID EXPOSURE STEP, LEACHING THE DYE FROM THE RESULTING BARE AREAS OF SAID SURFACE, RINSING THE ARTICLE, COLORING THE BARE AREAS FROM WHICH THE DYE HAS BEEN LEACHED, STRIPPING THE POLYMERIZED AREAS FROM SAID ARTICLE, AND THEREAFTER SEALING THE RESULTING COLORED ARTICLE.
Claim 2
Dependent Claim
119 words
A PROCESS FOR PRODUCING ANODIZED ALUMINUM ARTICLES IN WHICH SELECTED SURFACE AREAS ARE COLORED, WHICH COMPRISES: PREHEATING AND USEALED, DYED ANODIZED ARTICLE, LAMINATING THE PREHEATING ANODIZED ARTICLE TO A TRANSPARENT PHOTOPOLYMERIZABLE MATERIAL, CURING THE RESULTING LAMINATE, EXPOSING THE PHOTOPOLYMERIZABLE MATERIAL TO A PATTERN OF SUITABLE RADIATION SUFFICIENT TO EFFECT THE POLYMERIZATION OF AREAS EXPOSED TO SAID RADIATION, DEVELOPING THE RESULTING RESIST BY APPLYING A SOLVENT FOR THE UNPOLYMERIZED, PHTOPOLYMERIZABLE MATERIAL, TO THE SURFACE OF THE ARTICLE AFTER SAID EXPOSURE STEP, LEACHING THE DYE FROM THE RESULTING BARE AREAS OF SAID SURFACE, RINSING THE ARTICLE, COLORING THE BARE AREAS FROM WHICH THE DYE HAS BEEN LEACHED, STRIPPING THE POLYMERIZED AREAS FROM SAID ARTICLE, AND THEREAFTER SEALING THE RESULTING COLORED ARTICLE.
Claim 3
Dependent Claim
22 words
The process of claim 1 in which the photopolymerizable material has a color similar to the color of the dyed anodized article.
Claim 4
Dependent Claim
19 words
The process of claim 1 in which the leaching material is a solution of potassium dichromate and nitric acid.
Claim 5
Dependent Claim
23 words
The process of claim 1 in which the resist is developed in an alkaline liquid whereby the leaching and developing steps occur simultaneously.
References Cited (Backward Citations)
US2888391A
Cited
US3469982A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-10-14 | 1978-04-15 | 1978-10-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-14 | 1982-04-15 | 1982-10-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-14 | 1986-04-15 | 1986-10-15 | $7700.00 | Window Closed / Lapsed |