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:
Jul. 29, 2008
Filed:
Mar. 16, 2004
Kimitake Uematsu, Tsuchiura, JP;
Isamu Moriguchi, Tsuchiura, JP;
Masahito Iwashita, Tsuchiura, JP;
Akira Oda, Tsuchiura, JP;
Kimitake Uematsu, Tsuchiura, JP;
Isamu Moriguchi, Tsuchiura, JP;
Masahito Iwashita, Tsuchiura, JP;
Akira Oda, Tsuchiura, JP;
Toray Industries, Inc., , JP;
Abstract
A flat type capacitor-use polypropylene film having a Ad(thickness determined by micrometer method—thickness determined by weighing method) of 0.05-0.2 μm and a lengthwise shrinkage dimensional change rate of 3% or less, or a flat type capacitor-use polypropylene film having a Δd of 0.1-0.3 μm and a lengthwise F5 value of 50 MPa or more, and a flat type capacitor using it. A film excellent in handling ability in a capacitor element winding process is obtained, and a small, a large-capacity flat type capacitor excellent in withstand voltage characteristics such as self-recovering property, and used suitably under a high rated voltage, is obtained.