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:
Dec. 20, 1983
Filed:
May. 20, 1982
Shigeru Horie, Matsuyama, JP;
Takamasa Asano, Matsuyama, JP;
Tetsuo Ichihashi, Matsuyama, JP;
Hideo Katoh, Kanagawa, JP;
Teijin, Limited, Osaka, JP;
Abstract
A biaxially oriented polyester film composed of a polyester composition comprising (A) 100 parts by weight of a substantially linear polyalkylene terephthalate having ethylene terephthalate as a main structural component, (B) 0.01 to 5 parts by weight of an ester of an aliphatic polyol having at least 4 hydroxyl groups in the molecule with an aliphatic monocarboxylic acid having at least 8 carbon atoms, and (C) not more than 0.8 part by weight of fine inorganic particles having an average particle diameter of not more than about 1 micron and being substantially insoluble in the polyalkylene terephthalate. The aforesaid biaxially oriented polyester film is useful as a base of magnetic tapes.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile