Psi Star
Patent Owner
Stats
- 0 US PATENTS IN FORCE
- 0 US APPLICATIONS PENDING
- May 22, 1990 most recent publication
Details
- 0 Issued Patents
- 0 Issued in last 3 years
- 0 Published in last 3 years
- 222 Total Citation Count
- May 25, 1983 Earliest Filing
- 18 Expired/Abandoned/Withdrawn Patents
Patent Activity in the Last 10 Years
Technologies
- No Technology to Display
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Recent Publications
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Recent Patents
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Expired/Abandoned/Withdrawn Patents
Patent #
Title
Status
Filing Date
Issue/Pub Date
Intl Class
4927700 Copper etching process and product with controlled nitrous acid reactionExpiredFeb 06, 89May 22, 90[R32B]
4846918 Copper etching process and product with controlled nitrous acid reactionExpiredFeb 24, 88Jul 11, 89[C23F]
4545850 Regenerative copper etching process and solutionExpiredAug 20, 84Oct 08, 85[C03C, C23F, B44C]
4543153 Process and apparatus for etching copper masked by a nickel-gold maskExpiredMay 17, 84Sep 24, 85[C03C, C23F, B44C]
4497687 Aqueous process for etching cooper and other metalsExpiredDec 20, 83Feb 05, 85[C03C, C23F, B44C]
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