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:
May. 26, 1992
Filed:
Feb. 06, 1990
Applicant:
Inventors:
Kazunori Takeguchi, Amagasaki, JP;
Kohji Hirata, Amagasaki, JP;
Assignee:
Risho Kogyo Co., Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B32B / ;
U.S. Cl.
CPC ...
156 90 ; 156289 ; 156323 ; 174259 ;
Abstract
In manufacturing multilayer printed wiring boards with a cavity for mounting an electronic device, a rubber or composite rubber sheet is mounted in the cavity to prevent a prepreg resin from flowing into the cavity. The rubber sheet or composite rubber sheet is removed after applying pressure and temperature to an assembly consisting of boards to be bonded and the prepreg between them. This eliminates poor bonding which can result when resin flows into the cavity.
Takeguchi, Kazunori. (1992). Process for manufacturing multilayer printed wiring board (U.S. Patent No. 5116440). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5116440
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile