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. 07, 2003
Filed:
Sep. 19, 2001
Keiko Saita, Tokyo, JP;
Masao Watanabe, Tokyo, JP;
Advatest Corporation, Tokyo, JP;
Abstract
An object of the present invention is to provide a novel flux, which has sufficient cleaning performance and tolerates to be used under a high flex temperature when used for so-called Pb-free solder, such as Sn—Ag or Sn—Ag—Bi based solder, and which causes no deterioration of material or no disorder in durability and; the soldering flux of the present invention is a soldering flux, in which abietic acid, the main component of rosin, is used as a main base material component, and a solid acid compound, in which a halide ion is not a constituent element, is used as the inorganic component having a function to enhance the flux activity which is added and dispersed in said rosin-based base material.