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 Title: |
US3880725:
Predetermined thickness profiles through electroplating
[ Derwent Title ]
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| Country: |
US United States of America
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| Inventor: |
Van Raalte, John A.; Princeton, NJ
Christiano, Victor; Hamilton Sq., NJ
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| Assignee: |
RCA Corporation, New York, NY
other patents from RCA CORPORATION (466175) (approx. 7,929)
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| Published / Filed: |
1975-04-29
/ 1974-04-10
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| Application Number: |
US1974000459590
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| IPC Code: |
Advanced:
C25D 21/12;
Core:
more...
IPC-7:
C23B 5/48;
C23B 5/68;
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| U.S. Class: |
Current:
205/095;
204/230.7;
204/DIG.007;
205/096;
Original:
204/015;
204/231;
204/DIG.7;
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| Field of Search: |
204/DIG. 7,15,231,224,287,297
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| Priority Number: |
| 1974-04-10 |
US1974000459590 |
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| Abstract: |
A metal film having a predetermined thickness profile is obtained on a surface of an article through electroplating. The electroplating of the metal film on the article is done with an apparatus including a plurality of modifying electrodes and a body of plating material suspended in a plating solution. Electrical potentials are established at the article to be plated, the body of plating material, and at each one of the modifying electrodes. The particular electrical potential at the article, the body of plating material and at each one of the modifying electrodes is chosen to provide differences in electrical potential which result in a metal film having the predetermined thickness profile.
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| Attorney, Agent or Firm: |
Bruestle, G. H. ;
Cohen, D. S. ;
Silverman, C. L. ;
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| Primary / Asst. Examiners: |
Tufariello, T. M.;
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| Family: |
None
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First Claim:
Show all 4 claims |
1. An electroplating apparatus for obtaining a metal film having a predetermined thickness profile on a surface of an article comprising:
- a body of plating material, said body spaced from said surface of said article with the surface areas of said article to be most heavily plated in active relation with said body,
- a plurality of modifying electrodes, each one of said electrodes spaced from said surface of said article with the surface areas of said article to be least heavily plated in active relation with at least one of said electrodes, and
- means for providing differences in electrical potential between said article, said body of plating material and said modifying electrodes wherein at least some of said modifying electrodes can be provided with
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| Background / Summary: |
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| Drawing Descriptions: |
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| Description: |
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| Forward References: |
Show 33 U.S. patent(s) that reference this one
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