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. 06, 1990
Filed:
Jul. 05, 1988
Toshiaki Hamaguchi, Yokohama, JP;
Kazuhira Namikawa, Yokohama, JP;
Toshio Akai, Yokohama, JP;
Mutsuaki Nakamura, Yokohama, JP;
Akio Kuroda, Yokohama, JP;
Akio Hata, Shinnanyo, JP;
Noriki Fujii, Shinnanyo, JP;
Victor Company of Japan, Ltd., Yokoyama, JP;
Tokuyama Sekisui Industry Corporation, Limited, Osaka, JP;
Abstract
An information signal record medium of an electrostatic capacitance type in which a signal information is recorded as geometric variations is described. The medium is made of a conductive resin composition which comprises a vinyl chloride resin and 5 to 30 parts by weight of conductive particles based on 100 parts by weight of the vinyl chloride resin. The vinyl chloride resin is obtained by polymerizing at least one monomer for the vinyl chloride resin in which from 0.2 to 1 parts by weight of a lubricant per 100 parts by weight of the vinyl chloride resin is dissolved.