Location History:
- Aichi, JP (2000 - 2001)
- Yokohama, JP (1990 - 2003)
- Chita-gun, JP (2003 - 2008)
Company Filing History:
6 out of 2,560 
4 out of 27,375 
1 out of 163 
Years Active: 1990-2008
Title: Kenichi Ishikawa: Innovator in High Purity Phosphoric Acid and Automotive Solutions
Introduction
Kenichi Ishikawa is a distinguished inventor based in Yokohama, Japan, with a remarkable portfolio of 13 patents to his name. His innovative contributions span various fields, showcasing his expertise in chemistry and engineering.
Latest Patents
One of his significant recent innovations is a patent for high purity phosphoric acid, which specifies an Sb (antimony) content of 200 ppb or less and a sulfide ion content of 200 ppb or less as impurities on an 85 weight percent HPO basis. This high-purity phosphoric acid serves multiple applications, including its use as an etching solution for semiconductor devices with a silicon nitride film, etching solutions for liquid crystal display panels with an alumina film, a metallic aluminum etching solution, and as a raw material for phosphate glass used in optical fibers and food additives.
Another notable patent details a door module for automobiles that integrates a main body with a housing portion adjacent to a window opening. This innovative design incorporates a windowpane and door equipment like a regulator, all held within a uniquely shaped annular module frame that streamlines installation and functionality.
Career Highlights
Throughout his career, Kenichi Ishikawa has been associated with esteemed companies, including Asahi Glass Company, Limited and Matsushita Electric Industrial Co., Ltd. His work at these organizations has significantly contributed to the advancement of materials and automotive technologies.
Collaborations
Kenichi has collaborated with notable colleagues such as Hideyuki Hashimoto and Seiji Fuyama. Their combined efforts have fostered innovation and led to the development of cutting-edge solutions in their respective fields.
Conclusion
Kenichi Ishikawa's extensive patent portfolio and contributions to high purity phosphoric acid and automotive door technologies underscore his commitment to innovation. His work not only enhances industrial processes but also paves the way for future advancements in technology and materials science.