US4713150A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for preparing a part for color anodization
Assignee: Parker Pen IP Ltd
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Filing: 1985-11-08
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Granted: 1987-12-15
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Expires: 2005-11-08
Abstract
Abstract An article of manufacture having a metallic surface consisting of brass or stainless steel is overcoated with a first layer of nickel and a second layer of elemental niobium. The article may thereafter be color anodized in a solution of ammonium sulfate without the need for a hydrofluoric acid etch to produce a highly attractive and colorful ornamental surface finish. After anodization, the articles may be coated with clear epoxy or a sputter deposited transparent ceramic coating for added wear resistance.
Inventors
- 👤 Lloyd Hornbostel
- 👤 Dale Butrymowicz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:24
CPC Classifications
C; C25; C25D; C25D11/00; C25D11/02; C25D11/34; C23; C23C; C23C28/00; C25D11/26; Y; Y10; Y10S; Y10S205/00; Y10S205/917
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
83 words
A method of forming an ornamental coating on an article of manufacture comprising the steps of: providing a substrate having a metallic surface consisting of the metal brass; plating said surface with a first layer of nickel to a thickness of between two to five microns; sputter-depositing over said first layer a second layer of niobium to a thickness of between one to five microns; cleaning said second layer; and color anodizing said second layer in a solution of ammonium sulphate and water.
Claim 2
Independent Claim
83 words
A method of forming an ornamental coating on an article of manufacture comprising the steps of: providing a substrate having a metallic surface consisting of the metal brass; plating said surface with a first layer of nickel to a thickness of between two to five microns; sputter-depositing over said first layer a second layer of niobium to a thickness of between one to five microns; cleaning said second layer; and color anodizing said second layer in a solution of ammonium sulphate and water.
Claim 3
Dependent Claim
29 words
The method of claim 1 comprising the further step of overcoating said second layer with a layer of clear epoxy after said step of color anodizing said second layer.
Claim 4
Dependent Claim
29 words
The method of claim 1 comprising the further step of overcoating said second layer with a layer of transparent ceramic after said step of color anodizing said second layer.
Claim 5
Independent Claim
103 words
A method of forming an ornamental coating on an article of manufacture comprising the steps of: providing a substrate having a metallic surface consisting of the metal brass; plating said surface with a first layer of nickel to a thickness of between two to five microns; sputter-depositing over said first layer a second layer of niobium to a thickness of between one to five microns; cleaning said second layer; and color anodizing said second layer in a solution of ammonium sulphate and water, said second layer being maintained free from contact with acid prior to the step of color anodizing said second layer.
Claim 6
Independent Claim
103 words
A method of forming an ornamental coating on an article of manufacture comprising the steps of: providing a substrate having a metallic surface consisting of the metal brass; plating said surface with a first layer of nickel to a thickness of between two to five microns; sputter-depositing over said first layer a second layer of niobium to a thickness of between one to five microns; cleaning said second layer; and color anodizing said second layer in a solution of ammonium sulphate and water, said second layer being maintained free from contact with acid prior to the step of color anodizing said second layer.
Claim 7
Independent Claim
67 words
A method of forming an ornamental coating on an article of manufacture comprising the steps of: providing a substrate having a metallic surface consisting of the metal stainless steel; sputter-depositing over said surface a first layer of niobium to a thickness of between one to five microns; cleaning said coating in a water-base cleaner; and color anodizing said coating in a solution of ammonium sulphate and water.
Claim 8
Independent Claim
67 words
A method of forming an ornamental coating on an article of manufacture comprising the steps of: providing a substrate having a metallic surface consisting of the metal stainless steel; sputter-depositing over said surface a first layer of niobium to a thickness of between one to five microns; cleaning said coating in a water-base cleaner; and color anodizing said coating in a solution of ammonium sulphate and water.
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) | 1990-12-14 | 1991-06-15 | 1991-12-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-12-14 | 1995-06-15 | 1995-12-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-12-14 | 1999-06-15 | 1999-12-15 | $7700.00 | Window Closed / Lapsed |