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. 18, 1990
Filed:
Aug. 19, 1988
Applicant:
Inventors:
Michiyasu Ito, Kuwana, JP;
Toshiyuki Ishii, Kasugai, JP;
Shuji Matumura, Nagoya, JP;
Hajime Mushika, Niwa, JP;
Tomohide Tanaka, Nagoya, JP;
Assignee:
Mitsui Toatsu Chemicals, Incorporated, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B29C / ; B29C / ;
U.S. Cl.
CPC ...
264 41 ; 264145 ; 264154 ; 264156 ; 264284 ; 264D / ;
Abstract
A method for preparing a perforated film, for use in the field of sanitary, food packaging and industrial materials, by thermally embossing an oriented polyolefin film with an embossing roll having a large number of protruding knobs and a pinch roll which presses the film against the knobs, and simultaneously taking up the resultant film at a rate not less than the processing speed of the embossing roll.
Ito, Michiyasu. (1990). Method for preparing perforated film (U.S. Patent No. 4978486). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4978486
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile