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:
Mar. 09, 1999
Filed:
Sep. 16, 1997
Applicant:
Inventors:
Assignee:
Konica Corporation, , JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D / ;
U.S. Cl.
CPC ...
548253 ; 5482624 ; 5482636 ; 5483195 ; 5483684 ;
Abstract
Disclosed is a method of crystallizing coupler crystals, the method comprising the steps of dissolving crude crystals of a coupler in a first solvent having a first solubility parameter to obtain a coupler solution; and adding to the solution a second solvent having a second solubility parameter different from the first solubility parameter, when the crystallization rate in the solution is 5 to 30 weight % of crystals having a BET value of 10 m.sup.2 /g or less.
Kaneko, Tadahiro. (1999). Crystallization method (U.S. Patent No. 5880289). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5880289
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile