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:
Jan. 06, 2004
Filed:
May. 25, 2001
Atsuhiro Uratsuji, Ishikawa, JP;
Tatsutoshi Narita, Ishikawa, JP;
Masanobu Yagi, Ishikawa, JP;
Yoshiyuki Ukeda, Ishikawa, JP;
Sony Corporation, , JP;
Abstract
A printed wiring board having a conductor pattern on which a pre-flux film of a stabilized quality is to be formed using a water-soluble pre-flux liquid. To this end, such an apparatus is used which includes an etching unit for etching lands formed on the printed wiring board , a rinsing unit for rinsing the printed wiring board , a bubble removing unit for removing air bubbles attached to the printed wiring board on immersing the printed wiring board in a water-soluble pre-flux liquid in a processing vessel , a pre-flux forming unit for forming a pre-flux film on the lands of the printed wiring board in the pre-flux liquid using an in-liquid spraying unit , a liquid removing unit for removing the pre-flux liquid from the printed wiring board transported from the processing vessel and a rinsing unit for rinsing the printed wiring board