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. 22, 1985
Filed:
Apr. 17, 1984
Mutsuaki Nakamura, Yokohama, JP;
Kazuhira Namikawa, Yokohama, JP;
Toshikazu Goshima, Sagamihara, JP;
Toshiaki Hamaguchi, Yokohama, JP;
Akio Kuroda, Yokohama, JP;
Akio Hata, Shinnanyo, JP;
Noriki Fujii, Shinnanyo, JP;
Victor Company of Japan, Ltd., both of, JP;
Tokuyama Sekisui Industry Corporation, Ltd., both of, JP;
Abstract
A high density information record of the electrostatic capacitance type comprising a record substrate on which signal information is recorded as geometric variations. The record substrate is made of a conductive resin composition comprising a vinyl chloride resin and a conductive powder. The vinyl chloride resin is obtained by suspension polymerization of starting vinyl chloride monomer in an aqueous solution of a water-soluble polymer suspension stabilizer from which insoluble organic matters with sizes over 10 .mu.m have been removed.