The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 01, 1980
Filed:
Nov. 07, 1975
Applicant:
Inventors:
Tooru Tamura, Ikeda, JP;
Nobuyuki Ojima, Katano, JP;
Sigeru Kondo, Higashi-Osaka, JP;
Kenichirou Kishita, Kagoshima, JP;
Assignee:
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C25D / ;
U.S. Cl.
CPC ...
204 / ; 357-8 ; 427387 ; 4274432 ;
Abstract
A method of treating a semiconductor device comprising the step of dipping said semiconductor device into a solution of chelating agent selected from the group consisting of .gamma.-pyrones, nitrated catechols, flavones and combinations thereof.