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:
Jun. 29, 1999
Filed:
Oct. 06, 1997
Yuichi Wakata, Shizuoka-ken, JP;
Kimio Ichikawa, Shizuoka-ken, JP;
Fuji Photo Film Co., Ltd, Kanagawa, JP;
Abstract
A thermo-responsive microcapsule containing a diazo compound or an electron donative dye precursor, wherein the capsule wall of the microcapsule is composed of at least one polymer obtained by polymerization of an isocyanate compound containing an adduct of (A) a compound having one active hydrogen in the molecule and having an average molecular weight from 500 to 20000 and (B) a multifunctional isocyanate having two or more isocyanate groups in the molecule, and a heat-sensitive recording material and a multicolor heat-sensitive recording material comprising a heat-sensitive recording layer containing the microcapsule are disclosed.