US6447664B1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Methods for coating metallic articles
Assignee: Boston Scientific Scimed Inc
•
Filing: 1999-01-08
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Granted: 2002-09-10
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Expires: 2019-01-08
Abstract
Abstract Methods for coating metallic articles. In an exemplary embodiment, the method comprises the steps of providing a metallic article having an external surface with an oxide thereon; removing at least part of the oxide from the external surface of the article; and placing a coating on the article. The invention also includes coated metallic articles, and an apparatus for coating metallic articles.
Inventors
- 👤 Steven Taskovics
- 👤 Paul DiCarlo
- 👤 Bruce W. Flight
- 👤 V. Chandru Chandrasekaran
- 👤 Daniel Vancamp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 16:31
CPC Classifications
C; C25; C25F; C25F3/00; C25F3/16; C23; C23C; C23C30/00; C25D; C25D5/00; C25D5/34; C25D5/38; C25D7/00; C25F3/22
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
133 words
A method of coating a nitinol medical device comprising the steps of: providing said device having an external surface with an oxide thereon; removing at least part of said oxide from said external surface of said device; exposing said device exclusively to environments substantially free from oxygen as of the step of removing at least part of said oxide to the step of electroplating a gold strike layer, said oxygen free environments comprising an inert gas; electroplating a gold strike layer onto said device, wherein said electroplating comprises the steps of: preparing a strike bath comprising a fluorine-containing chemical; placing said device into said strike bath; and applying a current to said strike bath such that said strike layer is applied to said device; and electroplating a second gold coating on said device.
Claim 2
Independent Claim
133 words
A method of coating a nitinol medical device comprising the steps of: providing said device having an external surface with an oxide thereon; removing at least part of said oxide from said external surface of said device; exposing said device exclusively to environments substantially free from oxygen as of the step of removing at least part of said oxide to the step of electroplating a gold strike layer, said oxygen free environments comprising an inert gas; electroplating a gold strike layer onto said device, wherein said electroplating comprises the steps of: preparing a strike bath comprising a fluorine-containing chemical; placing said device into said strike bath; and applying a current to said strike bath such that said strike layer is applied to said device; and electroplating a second gold coating on said device.
Claim 3
Dependent Claim
22 words
The method of claim 1 , wherein said inert gas is selected from the group consisting of nitrogen, argon, and mixtures thereof.
Claim 4
Dependent Claim
26 words
The method of claim 1 , wherein said step of removing at least part of said oxide comprises the step of electropolishing said nitinol medical device.
Claim 5
Dependent Claim
19 words
The method of claim 3 , wherein said electropolishing is conducted in an electrolyte comprising sulfuric acid and methanol.
Claim 6
Dependent Claim
27 words
The method of claim 4 , wherein said electrolyte is maintained within a temperature range of from about −45° C. to about −65° C. during said electropolishing.
Claim 7
Dependent Claim
22 words
The method of claim 1 , wherein said fluorine-containing chemical is selected from the group consisting of hydrofluoric acid and ammonium bifluoride.
Claim 8
Dependent Claim
24 words
The method of claim 1 , wherein said medical device is selected from the group consisting of stents, filters, clips, prostheses and guide wires.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2005-09-09 | 2006-03-11 | 2006-09-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2009-09-09 | 2010-03-11 | 2010-09-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2013-09-09 | 2014-03-11 | 2014-09-10 | $7700.00 | Window Closed / Lapsed |