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. 12, 1999
Filed:
Sep. 13, 1996
Applicant:
Inventors:
Assignee:
Hitachi Chemical Company, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B32B / ;
U.S. Cl.
CPC ...
428209 ; 4282974 ; 428332 ; 428338 ; 428339 ; 428418 ; 428901 ; 4283211 ; 428384 ; 174258 ;
Abstract
A prepreg comprising a semi-cured thermosetting resin and electrically insulating whiskers or short fibers dispersed in said semi-cured thermosetting resin, and if necessary, a carrier film attached or bound to said prepreg is suitable for producing multilayer printed circuit boards of reduced thinness, high wiring density and high connection reliability with high productivity and low production cost.