This inventor holds 2 USPTO granted patents and 2 published patent applications, plus 1 CIPO patent and 2 EPO patents. Top assignee: Nisshin Steel Co., Ltd.. Active years: 2014-2017.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Company Filing History:
Years Active: 2014-2017
Title: Tomonaga Iwatsu: Innovator in IPM Motor Technology
Introduction
Tomonaga Iwatsu is a notable inventor based in Hiroshima, Japan. He has made significant contributions to the field of electrical engineering, particularly in the development of technologies related to IPM (Interior Permanent Magnet) motors. With a total of 2 patents, Iwatsu's work has had a considerable impact on the efficiency and performance of electric motors.
Latest Patents
Iwatsu's latest patents include a method for manufacturing a steel sheet for rotor cores used in IPM motors. This innovative method produces a steel sheet that achieves a magnetic flux density (B) of 1.65 T or more when measured at a magnetic field strength of 8000 A/m. Additionally, the residual magnetic flux density (Br) is 0.5 T or more under the same conditions. The invention also considers a coercivity (Hc) of 100 A/m or more after magnetization reaches 8000 A/m. By utilizing this advanced steel sheet in rotor cores, the output torque in high-speed rotational ranges can be significantly increased, enhancing the maximum rotational speed of the motors. Another patent focuses on a rotor for IPM motors, which incorporates a rotor iron core formed by laminating base steel sheets with similar magnetic properties.
Career Highlights
Throughout his career, Tomonaga Iwatsu has worked with prominent companies in the steel and manufacturing sectors. He has been associated with Nisshin Steel Co., Ltd. and Nippon Steel Nisshin Co., Ltd., where he has contributed to advancements in motor technology and materials science.
Collaborations
Iwatsu has collaborated with esteemed colleagues such as Yukio Katagiri and Susumu Fujiwara. Their combined expertise has fostered innovation and development in the field of electric motors.
Conclusion
Tomonaga Iwatsu's contributions to the field of IPM motors through his patents and collaborations highlight his role as a key innovator in electrical engineering. His work continues to influence the efficiency and performance of modern electric motor technologies.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile