US3440111A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Solvent dyeing of anodized aluminum
Assignee: Reynolds Metals Co
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Filing: 1966-06-15
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Granted: 1969-04-22
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Expires: 1986-06-15
Abstract
No abstract record available.
Inventors
- 👤 Kenneth Howard Dale
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:46
CPC Classifications
C; C25; C25D; C25D11/00; C25D11/02; C25D11/04; C25D11/18; C25D11/24; C25D11/243
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
109 words
METHOD FOR DYEING ANODIZED ALUMINUM COMPRISING THE STEPS OF: (A) REMOVING WATER FROM A WET ANODIZED ALUMINUM ARTICLE BY APPLYING TO THE ARTICLE AN ORGANIC DEHYRATING SOLVENT CAPABLE OF FORMING A CONSTANT BOILING MIXTURE WITH THE WATER PRESENT, AT AN ELEVATED TEMPERATURE; (B) APPLYING TO THE DRY ANODIZED ALUMINUM SURFACE A SOLUTION OF A DYESTUFF IN A WATER-IMMISCIBLE ORGANIC DYE SOLVENT TO PRODUCE A COLOR THEREON; AND (C) REMOVING AND RECOVERING SAID DYE SOLVENT FROM THE DYED BUT SOLVENT-WET ARTICLE AND DRYING SAID ARTICLE BY TREATING THE ARTICLE WITH AN ORGANIC STRIPPING SOLVENT WHICH IS MISCIBLE WITH THE DYE SOLVENT BUT WHICH IS NOT A SOLVENT FOR THE DYE.
Claim 2
Dependent Claim
109 words
METHOD FOR DYEING ANODIZED ALUMINUM COMPRISING THE STEPS OF: (A) REMOVING WATER FROM A WET ANODIZED ALUMINUM ARTICLE BY APPLYING TO THE ARTICLE AN ORGANIC DEHYRATING SOLVENT CAPABLE OF FORMING A CONSTANT BOILING MIXTURE WITH THE WATER PRESENT, AT AN ELEVATED TEMPERATURE; (B) APPLYING TO THE DRY ANODIZED ALUMINUM SURFACE A SOLUTION OF A DYESTUFF IN A WATER-IMMISCIBLE ORGANIC DYE SOLVENT TO PRODUCE A COLOR THEREON; AND (C) REMOVING AND RECOVERING SAID DYE SOLVENT FROM THE DYED BUT SOLVENT-WET ARTICLE AND DRYING SAID ARTICLE BY TREATING THE ARTICLE WITH AN ORGANIC STRIPPING SOLVENT WHICH IS MISCIBLE WITH THE DYE SOLVENT BUT WHICH IS NOT A SOLVENT FOR THE DYE.
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) | 1972-04-21 | 1972-10-21 | 1973-04-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-04-21 | 1976-10-21 | 1977-04-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-04-21 | 1980-10-21 | 1981-04-22 | $7700.00 | Window Closed / Lapsed |