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:
Sep. 17, 1991
Filed:
Feb. 02, 1990
Michael R Friswell, Wayne, NJ (US);
Michael P Hinton, Neshanic Station, NJ (US);
Alejandro Zimin, Wayne, NJ (US);
Morton International, Inc., Chicago, IL (US);
Abstract
A liquid dyestuff, useful as a major component of a ballpoint ink is prepared. A dye base, having both a sulfonic acid group and an azo group bonded to the same aromatic ring system, is provided in the aqueous phase of a two-phase system in which the organic phase is about 30 percent or more benzyl alcohol. In this two-phase system, the dye base is complexed with a diaryl quanidine, and the resulting dye concentrates in the organic solvent phase.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile