Location History:
- Gunma, JP (1991 - 2006)
- Kiryu, JP (1982 - 2010)
- Gumma, JP (2011 - 2012)
Company Filing History:
41 out of 152 
4 out of 60 
1 out of 91 Years Active: 1982-2012
Areas of Expertise:
Title: **Masafumi Sakamoto: A Pioneer in Electric Machine Innovations**
Introduction
Masafumi Sakamoto, an inventive mind based in Kiryu, Japan, has made significant strides in the field of electric machines. With an impressive portfolio of 48 patents, he has become well-known for his contributions to rotary electric machinery, proving his expertise and dedication to innovation in this domain.
Latest Patents
Among Masafumi Sakamoto’s latest patents is the **Permanent-magnet rotary electric machine**. This inventive design features a stator and a rotor, where the stator contains a core with several main poles and inductor teeth. The uniqueness of this design lies in the arrangement of permanent magnets and magnetic poles in the rotor, which are axially magnetized in opposite directions, optimizing performance. Additionally, his **Hybrid type rotary electric machine**, a stepper motor, highlights the intricacies of rotor magnetic poles and their alignment, showcasing different pitches of inductor teeth that contribute to its efficiency and functionality.
Career Highlights
Throughout his career, Sakamoto has worked with prominent companies such as Japan Servo Co., Ltd. and Nidec Servo Corporation. His roles within these organizations have allowed him to foster innovation and drive the development of cutting-edge technology in electric machines.
Collaborations
Masafumi’s journey in the world of innovation has been enriched through collaborations with esteemed coworkers like Kazuo Ohnishi and Toru Kobayashi. Together, they have navigated challenges and shared ideas that have propelled their projects to success, further enhancing the landscape of electric machine technology.
Conclusion
Masafumi Sakamoto exemplifies the spirit of innovation in engineering, particularly in the realm of electric machines. His extensive patent portfolio and collaborative efforts reflect a dedication to advancing technology and improving efficiency in various applications. As he continues to innovate, his contributions will undoubtedly play a pivotal role in shaping the future of electric machinery.