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. 05, 1991
Filed:
Mar. 17, 1988
Makoto Asano, Yokohama, JP;
Kiyoharu Hasegawa, Yokohama, JP;
Masatoshi Takagi, Sagamihara, JP;
Akihiro Yamaguchi, Kamakura, JP;
Keizaburo Yamaguchi, Kawasaki, JP;
Yoshimitsu Tanabe, Yokohama, JP;
Hiroyuki Akahori, Yokosuka, JP;
Mitsui Toatsu Chemicals, Incorporated, Tokyo, JP;
Abstract
An aqueous suspension of a multivalent-metal-modified salicylic acid resin, which is suitable for use in the production of color-developing sheets for pressure-sensitive recording paper sheets, contains a specific multivalent-metal-modified salicylic acid resin at the first-mentioned resin. Fine particles of the specific multivalent-metal-modified salicylic acid is dispersed in an aqueous solution of a dispersant composed of at least one compound selected from the group consisting of: