This inventor holds 6 USPTO granted patents. Top assignees: Maruma Jyusharyo Kabushiki Kaisha, Maruma Jysuharyo Kabushiki Kaisha, Maruma Jyusharyo Kabushikigaisha. Active years: 1985-1992.
Location History:
- Tokyo, JP (1988)
- Kawasaki, JP (1985 - 1992)
Company Filing History:
4 out of 9 
1 out of 1 
1 out of 2 Years Active: 1985-1992
Title: Hirotomo Numakura: Innovator in Polishing and Wrench Technologies
Introduction
Hirotomo Numakura is a notable inventor based in Kawasaki, Japan. He has made significant contributions to the fields of polishing apparatuses and hydraulic tools. With a total of 6 patents to his name, Numakura's innovations reflect his expertise and dedication to advancing technology.
Latest Patents
One of his latest inventions is the Curved Surface Rubbing Apparatus. This polishing apparatus allows for the polishing of workpieces with arbitrary curved surfaces. It features a fixed base and a swinging unit that can adjust the position of the retainer, enabling it to accommodate workpieces of different dimensions. Another significant invention is the High Torque Hydraulic Shoe Bolt Wrench. This tool is designed for mounting and removing shoe bolts that secure shoes to a track chain. It incorporates a vertical cylinder, a main frame, and a low-speed high-torque motor, ensuring efficient operation.
Career Highlights
Throughout his career, Hirotomo Numakura has worked with reputable companies, including Maruma Jyusharyo Kabushiki Kaisha. His experience in these organizations has contributed to his development as an inventor and innovator.
Collaborations
Numakura has collaborated with talented individuals such as Yasumitsu Moriki and Masahiro Sakurai. These partnerships have likely enriched his work and led to further advancements in his inventions.
Conclusion
Hirotomo Numakura's contributions to technology through his patents and inventions demonstrate his innovative spirit and commitment to improving industrial processes. His work continues to influence the fields of polishing and hydraulic tools.