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:
Aug. 09, 2005
Filed:
Mar. 26, 2003
Atsushi Yamaguchi, Kariya, JP;
Hidehiko Kumazawa, Nisshin, JP;
Atsushi Yamaguchi, Kariya, JP;
Hidehiko Kumazawa, Nisshin, JP;
Denso Corporation, Kariya, JP;
Abstract
A through-hole formed in a printed circuit board is prevented from being contaminated with water-resistant liquid coated on circuit elements. To prevent the water-resistant liquid from flowing into the through-hole, a barrier such as a bank surrounding the through-hole is formed in a screen-printing process for printing other patterns on the circuit board. The barrier is easily and precisely formed in a space between the through-hole and the circuit elements coated with the water-resistant liquid without requiring an additional manufacturing cost. The through-hole is reliably protected against the water-resistant liquid, while eliminating a conventional process of masking the through-hole.