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:
Sep. 17, 1985
Filed:
Nov. 07, 1984
Applicant:
Inventors:
Akemi Kinoshita, Higashiosaka, JP;
Ken Araki, Ibaragi, JP;
Hidemi Nawafune, Takatsuki, JP;
Shozo Mizumoto, Takarazuka, JP;
Assignee:
C. Uyemura & Co., Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01N / ;
U.S. Cl.
CPC ...
204 / ; 204405 ; 422 75 ; 422 76 ; 427305 ;
Abstract
An analytical method for determining by potentiometric titration formaldehyde in an electroless copper plating bath, which comprises using a hydroxylamine salt such as hydroxylamine hydrochloride as the titrant and using a silver electrode as the indicator electrode. This method can determine free formaldehyde in low concentration which takes part in the plating reaction.