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:
Jul. 10, 1990
Filed:
Mar. 23, 1989
Applicant:
Inventors:
Takashi Ashida, Ichihara, JP;
Koji Yamamoto, Ichihara, JP;
Assignee:
Idemitsu Petrochemical Co., Ltd., Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08G / ;
U.S. Cl.
CPC ...
528495 ; 528493 ; 528494 ;
Abstract
A solution of a polycarbonate resin in a good solvent of the resin is introduced concurrently but separately or as mixed with a poor solvent of the resin into a blending machine of self-cleaning type and heated and devolatilized therein so that a fine powder of the resin having a uniform particle size distribution and large bulk density can be easily obtained.