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. 26, 2002
Filed:
Apr. 21, 1998
Applicant:
Inventor:
Takatoshi Miki, Shiga-ken, JP;
Assignee:
Mitsubishi Polyester Film Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B29C 4/700 ;
U.S. Cl.
CPC ...
B29C 4/700 ;
Abstract
A process for producing a polyester composition, comprising polyester and a metal salt of an aliphatic carboxylic acid, whereby a metal salt and polyester are fed together into a vented extruder as a raw material. The raw material has a specific resistance of not less than 1×10 &OHgr;·cm upon melting and a metal atom concentration of 0.5 to 1,000 ppm based on the polyester composition. This process is industrially useful for producing a polyester composition which can be used to form sheets using an electrostatic pining method.