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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.:

US 5342967 B1

PDFFull Text
Date of Patent:
Aug. 30, 1994

Filed:

Jul. 31, 1992

Crystal modifications of

Applicant:
Inventors:

Shigeo Fujita, Osaka, JP;

Mansuke Matsumoto, Hyogo, JP;

Yojiro Kumagae, Osaka, JP;

Sayuri Wada, Osaka, JP;

Shuichi Hashimoto, Osaka, JP;

Assignee:

Yamamoto Chemicals, Inc., Osaka, JP;

Attorney:

Browdy and Neimark

Primary Examiner:

C Warren Ivy

Assistant Examiner:

A A Owens

Int. Cl.
CPC ...
C07D / ;
U.S. Cl.
CPC ...
549226 ;
Abstract

The improved two types of crystal modification of 2-n-toluidino-3-methyl-6-di-n-butylaminofluoran, as well as the crystalline toluene adduct thereof have high solubility in inner-phase solvent(s). Recording materials that use those compounds as electron donating color formers exhibit particularly good performance in various characteristics such as whiteness of the background, its storage stability, color rendition, sensitivity for color formation and image storage stability.

Find Patent Forward Citations

Fujita, Shigeo. (1994). Crystal modifications of (U.S. Patent No. 5342967). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5342967

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