US3833374A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coloring of anodized aluminum
Assignee: Horizons Research Inc
•
Filing: 1972-10-05
•
Granted: 1974-09-03
•
Expires: 1992-10-05
Abstract
Abstract Coloring of anodized aluminum using a resist which includes a dye which can be absorbed by the anodized layer.
Inventors
- 👤 E Patrick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 01:39
CPC Classifications
G; G03; G03F; G03F7/00
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
21 words
The process of claim 1 wherein the bleaching is carried out as a separate step after wash off of the resist.
Claim 2
Dependent Claim
42 words
The process of claim 1 wherein prior to sealing the pores in the dyed anodized article at least one additional dye is applied to the undyed areas through a mask, after which the article is sealed, whereby a multi-color article is produced.
Claim 3
Dependent Claim
51 words
The process of claim 1 wherein prior to sealing the pores in the dyed anodized article, a second dye-containing photosensitive resist is applied to the dyed anodized article and then exposed, developed and removed whereby the article is dyed with a second color and then sealing the double dyed anodized article.
References Cited (Backward Citations)
US3079309A
Cited
US3264142A
Cited
US3619187A
Cited
US3647447A
Cited
US3718548A
Cited
US3715211A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-09-02 | 1978-03-04 | 1978-09-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-02 | 1982-03-04 | 1982-09-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-02 | 1986-03-04 | 1986-09-03 | $7700.00 | Window Closed / Lapsed |