This inventor holds 9 USPTO granted patents and 5 published patent applications. Top assignees: Kabushiki Kaisha Tokai Rika Denki Seisakusho, Toyota Jidosha Kabushiki Kaisha, Denso Corporation. Active years: 2004-2025.
Location History:
- Mishima, JP (2004 - 2010)
- Aichi-ken, JP (2017 - 2024)
Company Filing History:
6 out of 2,029 
4 out of 38,774 
1 out of 20,378 
Years Active: 2004-2025
Title: Ryuji Yamaguchi: Innovator in Buckle Device Technology
Introduction
Ryuji Yamaguchi is a notable inventor based in Mishima, Japan. He has made significant contributions to the field of buckle device technology, holding a total of 9 patents. His innovative designs have enhanced the functionality and safety of various products.
Latest Patents
One of Yamaguchi's latest patents is a buckle device designed for boots. In this invention, a buckle body is held in the upper part of a boot, while a lower part is supported from below by a frame and a protector. The design features an upper left inclination surface of the boot and a lower left inclination surface of the protector, both inclined downward and inward. This configuration allows for the application of a displacement force inward, effectively suppressing downward displacement when a load is applied from above. Another patent involves a buckle device where, upon the initiation of torsional deformation of the torsion shaft, the breaking portion of a shear plate begins to deform. This deformation allows for the rotation of the spool and the drawing-out of the belt, increasing the allowable drawing-out load.
Career Highlights
Throughout his career, Ryuji Yamaguchi has worked with prominent companies such as Tokai Rika Co., Ltd. and Toyota Motor Corporation. His experience in these organizations has contributed to his expertise in developing innovative buckle devices.
Collaborations
Yamaguchi has collaborated with notable coworkers, including Yoshio Mizuno and Yasuo Hagisato. Their combined efforts have led to advancements in buckle technology and design.
Conclusion
Ryuji Yamaguchi's contributions to buckle device technology demonstrate his innovative spirit and dedication to improving product functionality. His patents reflect a commitment to enhancing safety and usability in everyday items.