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:
Nov. 26, 1991
Filed:
Oct. 02, 1989
Applicant:
Inventors:
Assignee:
Kao Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B29C / ;
U.S. Cl.
CPC ...
264 41 ; 264564 ; 264146 ; 2642902 ; 264D / ; 4253261 ;
Abstract
A process for making a film including forming a composite material of a thermoplastic film into an annular original film having at least two thick portions according to the inflation process, making the annular original film into a flat shape such that the thick portions are located at substantially opposite ends thereof, and stretching the flat annular original film by clamping the thick portions.