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:
Aug. 27, 1985
Filed:
Mar. 27, 1984
Applicant:
Inventors:
Hiroto Tajima, Yokohama, JP;
Hironori Kawakami, Kawasaki, JP;
Zenichi Mashino, Soka, JP;
Seinoshin Hayami, Yokohama, JP;
Osamu Ohzeki, Fukui, JP;
Assignees:
Chiyoda Chem. Engineering & Constr. Co., Yokohama, JP;
Nikka Chemical Industry Co., Ltd., Fukui, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C10L / ;
U.S. Cl.
CPC ...
44 51 ; 44 61 ;
Abstract
Molten pitch, such as obtained in petroleum refining, is comminuted as such in the presence of water to obtain coarse pitch particles solidified during the comminution by contact with the water. The coarse pitch particles are further pulverized in the presence of water and, preferably, a dispersant to form a slurry containing the finely pulverized pitch particles dispersed in the water.