Location History:
- Iwakuni, JP (1979)
- Ohtake, JP (1989 - 1993)
- Ootake, JP (1993)
- Kuga, JP (1993 - 1994)
- Waki, JP (1995)
- Yamaguchi, JP (1997)
- Kuga-gun, JP (1997 - 1999)
- Yamaguchi-ken, JP (1999)
- Waki-cho, JP (1997 - 2000)
- Hiroshima, JP (1992 - 2018)
Company Filing History:
21 out of 1,008 
5 out of 1,786 
1 out of 58,129 
Years Active: 1979-2018
Title: **Kazuo Yagi: Innovator in Advanced Polymer Films**
Introduction
Kazuo Yagi, a prominent inventor based in Ohtake, Japan, has made significant contributions to the field of advanced polymer films. With an impressive portfolio of 26 patents, Yagi's work showcases innovative approaches to material science that enhance the functionality and durability of various films used in multiple applications.
Latest Patents
Among his latest patents, Yagi developed a film containing a resin with a thiourethane bond. This innovative film boasts a carefully optimized molar ratio of sulfur to nitrogen, resulting in exceptional properties such as high refractive index, low birefringence, and excellent light transmittance. These characteristics make it particularly useful in applications where mechanical strength and dimensional stability are critical, minimizing deformation during processing while ensuring robustness in solvent resistance.
Additionally, Yagi has patented a porous film made from high molecular weight polyolefin. This microporous film is characterized by its strength and air permeability, making it ideal for a variety of uses including filtering materials, battery separators, and moisture-permeable waterproof applications such as diapers and house-wrapping films. The innovative manufacturing process he developed involves thermal treatment of an air-impermeable film, followed by stretching or thermosetting treatments, allowing for enhanced performance characteristics.
Career Highlights
Throughout his career, Kazuo Yagi has been associated with notable companies such as Mitsui Petrochemical Industries Ltd. and Mitsui Chemicals Inc. His work in these organizations has facilitated the development of groundbreaking materials that contribute to advancements in sectors ranging from energy storage to consumer products.
Collaborations
Yagi's collaborative efforts with esteemed colleagues, including Hitoshi Mantoku and Akinao Hashimoto, have further enriched his inventions. These partnerships have allowed for the amalgamation of diverse expertise, leading to innovative breakthroughs in polymer film technology.
Conclusion
Kazuo Yagi’s innovative spirit and dedication to advancing polymer films have cemented his reputation as a leading inventor in his field. With 26 patents to his name, his contributions are pivotal in enhancing the properties and applications of materials used in various industries, paving the way for future innovations in film technology.
Inventor’s Patent Attorneys refers to legal professionals with specialized expertise in representing inventors throughout the patent process. These attorneys assist inventors in navigating the complexities of patent law, including filing patent applications, conducting patent searches, and protecting intellectual property rights. They play a crucial role in helping inventors secure patents for their innovative creations.