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.

Date of Patent:
Jan. 18, 2005

Filed:

Apr. 29, 2002
Applicant:

Hiroji Ohigashi, Zushi, JP;

Inventor:

Hiroji Ohigashi, Zushi, JP;

Assignee:

Other;

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B29C 5504 ; B29C 5506 ; B29C 6902 ; B29C 7102 ;
U.S. Cl.
CPC ...
Abstract

A film made of a vinylidene-trifluoroethylene or tetrafluoroethylene copolymer is uniaxially drawn to fabricate a uniaxially drawn film. Then, the uniaxially drawn film is thermally treated at a temperature within a temperature range of the Curie temperature through the melting point of the vinylidene-trifluoroethylene or tetrafluoroethylene copolymer for five hours or over, to diffuse the molecular chains of the uniaxially drawn film along the orientation direction and thus, to remove the intertwining between the molecular chains.


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Ohigashi, Hiroji. (2005). Method for fabricating a ferroelectric polymer film (U.S. Patent No. 6843941). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/6843941

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