Yasuhisa Kojima

Title: Yasuhisa Kojima: Innovator in Polishing Technology

Introduction

Yasuhisa Kojima is a notable inventor based in Kanagawa-ken, Japan. He has made significant contributions to the field of polishing technology, holding two patents that showcase his innovative approach to improving polishing apparatuses.

Latest Patents

Kojima's latest patents include a polishing apparatus that comprises a polishing tool, a substrate holding member, and a sensor for detecting a failure of a substrate to be polished. Another patent discloses a polishing apparatus that includes a measuring device to measure a drive current of a drive unit while the drive unit drives at least one of the polishing tool and the substrate holding member. This invention features a failure detection unit that can identify either the jumping of the substrate from the substrate member or breakage of the substrate. The detection is based on a comparison of the drive current with a threshold value or a comparison of a waveform pattern of the drive current with a predetermined waveform pattern.

Career Highlights

Throughout his career, Yasuhisa Kojima has worked with Ebara Corporation, a company known for its advanced technology in fluid handling and processing. His work has contributed to the development of more efficient and reliable polishing systems.

Collaborations

Kojima has collaborated with notable professionals in his field, including Koji Ono and Shozo Oguri. These collaborations have likely enhanced his innovative capabilities and contributed to the success of his inventions.

Conclusion

Yasuhisa Kojima's contributions to polishing technology through his patents reflect his dedication to innovation and improvement in the industry. His work continues to influence the development of advanced polishing apparatuses.