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:
Oct. 16, 1979
Filed:
Apr. 21, 1978
Applicant:
Inventors:
Assignee:
U.S. Philips Corporation, New York, NY (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C23C / ;
U.S. Cl.
CPC ...
106-123 ; 106-126 ; 427 92 ; 427 98 ; 427305 ; 427437 ;
Abstract
Electroless copper plating bath containing a copper salt, a complexing agent, alkali and by way of reducing agent a complex of formaldehyde with an aminocarboxylic acid, -sulphonic acid or -phosphonic acid. Consequently, decomposition of the bath is greatly reduced and furthermore copper of a superior quality is obtained.