Location History:
- Takaoka, JP (1985 - 1990)
- Kawasaki, JP (1991 - 2004)
- Tokyo, JP (2007 - 2014)
Company Filing History:
9 out of 1,241 
8 out of 598 
2 out of 2,253 
Years Active: 1985-2014
Title: **Masahiro Yamakawa: A Pioneer in Battery Technology**
Introduction
Masahiro Yamakawa is a prominent inventor based in Tokyo, Japan, recognized for his significant contributions to the field of battery technology. With a portfolio of 19 patents, Yamakawa's innovations focus on improving the performance and efficiency of electrodes in lithium batteries, making him a key figure in the development of advanced energy storage solutions.
Latest Patents
Yamakawa's most recent patents showcase his ingenuity in creating compositions for electrodes. One notable invention is a composition for electrodes comprising an iron compound with carbon and a (meth)acrylate-nitrile copolymer. This innovation includes a positive electrode active material and a copolymer formulated through the copolymerization of acrylic acid esters and/or methacrylic acid esters with an α,β-unsaturated nitrile compound. His method for producing the electrode involves mixing materials to create a slurry, coating a collector, and removing solvents to achieve a functional electrode.
Another significant patent focuses on a negative electrode material for lithium batteries. This invention comprises a carbonaceous negative electrode active substance with a specific surface area, a binder made of styrene-butadiene rubber, and carbon fiber. This innovative material enhances battery performance by ensuring low electrode resistance, high strength, excellent permeability, and superior charging and discharging capability.
Career Highlights
Yamakawa has held key roles in renowned companies such as Zeon Corporation and Nippon Zeon Company, Ltd. His expertise in polymer chemistry and battery technology has allowed him to lead significant projects aimed at enhancing battery performance, making a substantial impact in the industry.
Collaborations
Throughout his career, Yamakawa has collaborated with notable colleagues, including Hidekazu Mori and Katsuya Nakamura. Their joint efforts have fostered advancements in battery technology, allowing them to explore new materials and methods for energy storage applications.
Conclusion
Masahiro Yamakawa's contributions to the field of battery technology through his innovative patents have positioned him as a leading inventor in Japan. His focus on developing new electrode materials continues to push the boundaries of energy storage solutions, driving the industry towards more efficient and reliable battery systems.