This inventor holds 4 USPTO granted patents. Top assignees: Masako Kiyohara, Eisai Company, Limited, Other. Active years: 1992-1995.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Location History:
- Saitama, JP (1992)
- Osaka, JP (1993 - 1995)
Company Filing History:

Years Active: 1992-1995
Title: Hisayoshi Matsumoto: Innovator in Liquid Feed Pump Technology
Introduction
Hisayoshi Matsumoto is a notable inventor based in Saitama, Japan. He has made significant contributions to the field of liquid feed pump technology, holding a total of 4 patents. His innovative designs have advanced the efficiency and functionality of fluid control systems.
Latest Patents
Matsumoto's latest patents include a liquid feed pump specifically designed for liquid medicine and liquid feed. This invention features a metallic diaphragm within a pump chamber that oscillates via a stem to effectively feed liquid medicine. The stem is equipped with a plate, and its movement is limited by a pair of stoppers, which can be adjusted for relative positioning through reverse-threaded designs. Additionally, the stem carries a piston that moves vertically within a cylinder chamber, utilizing compressed air to oscillate the stem. Another notable patent is a valve seal that incorporates a thin metallic film backed by a resiliently deformable body. This innovative seal conforms to the surface it seals against when the valve is closed and returns to its original state when opened.
Career Highlights
Throughout his career, Matsumoto has worked with prominent companies, including Masako Kiyohara and Eisai Company, Limited. His experience in these organizations has contributed to his expertise in developing advanced fluid control technologies.
Collaborations
Matsumoto has collaborated with talented individuals such as Masahiko Nakazawa and Tetsuya Kojima. Their combined efforts have fostered innovation and creativity in their respective fields.
Conclusion
Hisayoshi Matsumoto's contributions to liquid feed pump technology exemplify his dedication to innovation. His patents reflect a commitment to improving fluid control systems, making a lasting impact in the industry.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile