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. 01, 2013
Filed:
Jun. 18, 2009
Hiroshi Fujii, Ichihara, JP;
Tadashi Kawakami, Ichihara, JP;
Satoshi Kodama, Ichihara, JP;
Kazumi Jyujyo, Kisarazu, JP;
Hiroshi Fujii, Ichihara, JP;
Tadashi Kawakami, Ichihara, JP;
Satoshi Kodama, Ichihara, JP;
Kazumi Jyujyo, Kisarazu, JP;
Nippon Soda Co., Ltd., Tokyo, JP;
Abstract
Provided is a recording material with a superior heat resistance and having a low content of a dihydroxydiphenylsulfone derivative, and a color-developing composition for producing the recording material. With the use of this color-developing composition, a recording material with a superior heat resistance at the background part can be provided and the content of a dihydroxydiphenylsulfone derivative, such as 4,4'-dihydroxydiphenylsulfone, in the color-developing composition can be reduced to 2% by mass or less, or further to 1% by mass or less.