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. 26, 2011
Filed:
Dec. 05, 2007
Masayuki Kiso, Hirakata, JP;
Yukinori Oda, Hirakata, JP;
Seigo Kurosaka, Hirakata, JP;
Tohru Kamitamari, Hirakata, JP;
Yoshikazu Saijo, Hirakata, JP;
Katsuhisa Tanabe, Hirakata, JP;
Masayuki Kiso, Hirakata, JP;
Yukinori Oda, Hirakata, JP;
Seigo Kurosaka, Hirakata, JP;
Tohru Kamitamari, Hirakata, JP;
Yoshikazu Saijo, Hirakata, JP;
Katsuhisa Tanabe, Hirakata, JP;
C. Uyemura & Co., Ltd., Osaka-Shi, JP;
Abstract
An electroless gold plating bath includes a water-soluble gold compound, a complexing agent, a formaldehyde metabisulfite adduct, and an amine compound represented by R—NH—CH—NH—Ror (CH—NH—CH—NH—CH)(wherein Rto Rrepresent —OH, —CH, —CHOH, —CHOH, —CHN(CH), —CHNH(CHOH), —CHNH(CHOH), —CHNH(CHOH), —CHNH(CHOH), —CHN(CHOH), —CHN(CHOH), —CHN(CHOH)or —CHN(CHOH), and n is an integer of 1 to 4). A gold plated coating of a good appearance can be formed without causing a failure in appearance owing to the progress of intergranular corrosion in a nickel surface.