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:
Feb. 11, 1992
Filed:
Aug. 28, 1990
Toshihiko Matsushita, Tokyo, JP;
Sadao Morishita, Ushiku, JP;
Mitsubishi Paper Mills Limited, Tokyo, JP;
Abstract
Disclosed is a recording material which comprises a normally colorless or palely colored dye precursor and a developer which causes the dye precursor to form color upon contact with the dye precursor, said developer being a copolymer of (A) a styrene monomer with (B) at least one monomer selected from the group consisting of a vinylsulfonic acid type monomer, a (meth)acrylic type phosphorous-containing monomer and a (meth)acrylic acid type monomer. This recording material is excellent in stability of color image portion and non-image portion.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile