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:
May. 22, 1990
Filed:
Apr. 28, 1989
Applicant:
Inventors:
Hisashi Senshu, Machida, JP;
Masahiro Otsuka, Osaka, JP;
Assignee:
Orient Chemical Industries, Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D / ;
U.S. Cl.
CPC ...
210634 ; 210669 ; 534887 ;
Abstract
The present invention provides a process for highly purifying C.I. Solvent Black 3 using specific aromatic hydrocarbons or petroleum hydrocarbons. The process comprises dissolving C.I. Solvent Black 3 represented by ##STR1## in an organic solvent selected from the group consisting of aromatic hydrocarbons having 6 to 12 carbon atoms and petroleum hydrocarbons having 6 to 10 carbon atoms followed by filtering, and then removing the solvent.
Senshu, Hisashi. (1990). Purification of c.i. solvent black 3 (U.S. Patent No. 4927538). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4927538
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile