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. 14, 2002
Filed:
Sep. 05, 2001
Applicant:
Inventors:
Takayuki Imai, Tokyo, JP;
Toshifumi Nakajima, Tokyo, JP;
Takahiro Ishii, Sakura, JP;
Toshio Ochiai, Tokyo, JP;
Nobuyuki Kohama, Kitakatsushika-gun, JP;
Nobutada Hyakutake, Kitakatsushika-gun, JP;
Assignee:
Fujikura Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01C 1/010 ;
U.S. Cl.
CPC ...
H01C 1/010 ;
Abstract
A film pressure sensitive resistor comprises conductive particles such as carbon black, a binder such as polyester resin, and spherical elastic particles having an average particle diameter of 2 &mgr;m to 50 &mgr;m, and further has average surface roughness of 0.1 &mgr;m to 3 &mgr;m, a peak-to-peak concavo-convex period of 10 &mgr;m to 1000 &mgr;m, and an elastic modulus of 800 MPa to 8000 MPa so as to have reliable quality, and excellent environmental resistance, and durability to repeated use (depressing).