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:
Sep. 10, 1991
Filed:
May. 10, 1989
Applicant:
Inventors:
Yutaka Maeno, Yotsukaido, JP;
Seiji Hashiguchi, Narashino, JP;
Keiichi Hasegawa, Yotsukaido, JP;
Masaaki Hachiya, Narashino, JP;
Shingo Ueyama, Yokohama, JP;
Assignee:
Hitachi, Ltd., Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01R / ; G01R / ;
U.S. Cl.
CPC ...
3241 / ; 324 731 ; 3241 / ;
Abstract
A printed circuit board is provided on its surface with position detecting patterns at specific positions with respect to conductor patterns for connecting the leads of an integrated circuit. The position of the lead connecting conductor patterns is obtained an indirect manner through a calculation based on the positional information of the position detecting patterns.