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. 12, 2011
Filed:
Mar. 09, 2005
Kiyoshi Torigoe, Miyazaki, JP;
Masataka Shimizu, Miyazaki, JP;
Kenji Yamamoto, Miyazaki, JP;
Mitsuhiro Mizozoe, Miyazaki, JP;
Hoshiro Takahashi, Mouka, JP;
Tomohide Suzuki, Ibaraki, JP;
Motohiro Murase, Miyazaki, JP;
Kiyoshi Torigoe, Miyazaki, JP;
Masataka Shimizu, Miyazaki, JP;
Kenji Yamamoto, Miyazaki, JP;
Mitsuhiro Mizozoe, Miyazaki, JP;
Hoshiro Takahashi, Mouka, JP;
Tomohide Suzuki, Ibaraki, JP;
Motohiro Murase, Miyazaki, JP;
Senju Metal Industry Co., Ltd., Tokyo, JP;
Miyazaki Prefecture, Miyazaki, JP;
Abstract
In a solder paste which is a mixture of a flux and low melting point metal particles, low melting point metal fine particles manufactured by a conventional method or apparatus therefor include particles having widely varying particle diameters. Accordingly, the solder paste could not completely fill the minute holes in a mask for application to minute solder portions by printing, or mask removability was poor. According to the present invention, a mixture of a heat resistant continuous phase liquid and coarse metal particles in molten state is passed through a porous membrane to form the coarse low melting point metal particles into fine particles with a predetermined diameter. An apparatus according to the present invention comprise a porous membrane between a heating and dispersing mechanism and a cooling mechanism, and a pressure vessel connected to the heating and dispersing mechanism for applying a high pressure to the heating and dispersing mechanism.