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:
Feb. 21, 1978
Filed:
Apr. 27, 1977
Applicant:
Inventors:
Yoshihiro Narita, Sodegaura, JA;
Shigeaki Mochizuki, Tokuyama, JA;
Shigeru Kakimoto, Tokuyama, JA;
Norio Komori, Sodegaura, JA;
Kiyoshi Watanabe, Sodegaura, JA;
Hideji Shiota, Sodegaura, JA;
Assignee:
Idemitsu Kosan Co., Ltd., Tokyo, JA;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B02C / ;
U.S. Cl.
CPC ...
241 23 ; 264-5 ; 264-9 ;
Abstract
A method of producing polycarbonate powder comprises continuously mixing and kneading a polycarbonate solution while heating same, the kneading being accomplished by producing a limited 'to and fro' movement of the polycarbonate solution with the aid of a set of spiral blades mounted on rotating shafts in an elongated barrel.