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:
Mar. 27, 1990
Filed:
Nov. 21, 1988
Applicant:
Inventors:
Satoshi Tanaka, Saitama, JP;
Masahiro Suzuki, Saitama, JP;
Assignee:
Junkosha Co., Ltd., , JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B31B / ;
U.S. Cl.
CPC ...
156 60 ; 156228 ; 156288 ; 1563063 ; 156901 ; 264104 ;
Abstract
A process is provided for making a laminated board useful in printed circuitry. The process involves laminating a metal layer to at least one side of a sheet of porous, expanded polytetrafluoroethylene using an adhesive followed by compressing the polytetrafluoroethylene sheet to increase its density. The metal layer may be a metal foil or it may comprise electrical circuitry. Also provided are printed circuit boards produced by the aforesaid process.