This inventor holds 2 USPTO granted patents and 4 published patent applications and 1 EPO patent. Top assignee: Hitachi, Ltd.. Active years: 1998-2017.
Location History:
- Kokubunji, JP (1998)
- Tokyo, JP (2017)
Company Filing History:
Years Active: 1998-2017
Title: Innovations of Masakuni Okamoto
Introduction
Masakuni Okamoto is a prominent inventor based in Tokyo, Japan. He has made significant contributions to the field of thermoelectric devices and electron emission technology. With a total of 2 patents, Okamoto's work showcases his innovative approach to solving complex engineering challenges.
Latest Patents
One of Okamoto's latest patents is a thermoelectric conversion device. This device includes a Heusler alloy film structured according to Bor Lin notation of ABC, along with a pair of electrodes that output an electromotive force generated by a thermal gradient in the alloy film. The device is designed to enhance electric conductivity and the Seebeck coefficient S by applying an electric field or voltage through an insulation film. Additionally, it allows for the selection of outputs from multiple thermoelectric conversion devices arranged in a matrix, thereby increasing the electromotive force as an output.
Another notable patent is related to a cathode and electron beam emission apparatus. This invention features a Schottky emission cathode with a tungsten single-crystal electron emitter that has a sharp point. The work function of the crystal face is reduced by adsorbing a nitride or oxide, which can be formed on the heater or chemically adsorbed on the point. This innovation results in a cathode with a narrow full width at half maximum (FWHM) of emission electrons and a high current density.
Career Highlights
Masakuni Okamoto is currently employed at Hitachi, Ltd., where he continues to develop cutting-edge technologies. His work has been instrumental in advancing the capabilities of thermoelectric devices and electron emission systems.
Collaborations
Okamoto has collaborated with notable colleagues, including Hidetoshi Nisiyama and Hiroyuki Shinada. These partnerships have contributed to the successful development of his innovative technologies.
Conclusion
Masakuni Okamoto's contributions to the fields of thermoelectric conversion and electron emission technology highlight his role as a leading inventor. His patents reflect a commitment to innovation and the advancement of engineering solutions.