Location History:
- Tochigi-ken, JP (2010)
- Nasushiobara, JP (2014 - 2018)
Company Filing History:
5 out of 50 
3 out of 3,481 
2 out of 47 Years Active: 2010-2018
Title: Kazuhiro Yamada: Innovator in Microporous Film Technology
Introduction
Kazuhiro Yamada is a prominent inventor based in Nasushiobara, Japan. He has made significant contributions to the field of microporous film technology, holding a total of 10 patents. His work primarily focuses on developing advanced materials for applications in lithium-ion batteries and consumer electronics.
Latest Patents
Yamada's latest patents include a biaxially stretched microporous film and a multilayered microporous polyolefin film. The biaxially stretched microporous film features a band-like polyethylene material with a film width of not less than 300 mm. It ensures that the distribution of physical properties in the film width direction and the thickness variation is less than 1.00 µm, with air permeability variation not exceeding 50 seconds/100 mL. This film exhibits excellent planarity and uniformity of physical properties, making it ideal for use as a separator film in lithium-ion batteries for automobiles and consumer electronics.
The multilayered microporous polyolefin film consists of at least first microporous layers forming both surface layers of the membrane, along with a second microporous layer positioned between them. The static friction coefficient of one surface layer against another in the longitudinal direction (MD) is 1.1 or less. Additionally, the pore density calculated from the average pore radius measured by the mercury porosimetry method and porosity is 4 or more.
Career Highlights
Throughout his career, Kazuhiro Yamada has worked with notable companies such as Toray Battery Separator Film Co., Ltd. and Toray Industries, Inc. His innovative work has significantly impacted the development of materials used in energy storage solutions.
Collaborations
Yamada has collaborated with esteemed colleagues, including Shintaro Kikuchi and Koichi Kono, contributing to advancements in microporous film technology.
Conclusion
Kazuhiro Yamada's contributions to microporous film technology have established him as a key figure in the field. His innovative patents and collaborations continue to influence the development of advanced materials for various applications.