Company Filing History:
Years Active: 1994-2012
Title: The Innovative Mind of Naohisa Koyanagi
Introduction
Naohisa Koyanagi is a notable inventor based in Isesaki, Japan, recognized for his significant contributions in the field of motor technology. With a portfolio of ten patents, Koyanagi has demonstrated exceptional creativity and technical expertise, proving himself to be a valuable asset in his industry.
Latest Patents
Among his latest innovations, Koyanagi has developed a compact motor that comprises a cylindrical permanent magnet affixed to the inner surface of a hollow cylindrical yoke. This motor features an armature core, which is strategically positioned at the interior of the permanent magnet. Notably, the armature core incorporates three slots arranged at uniform pitches, and the permanent magnet is bipolar-magnetized. Each magnetic pole exhibits maximum magnetic flux density values that range from 40° to 50° from the center at both sides, ensuring optimal performance.
Additionally, Koyanagi has created an axial air-gap vibration motor. This innovative motor includes an eccentric rotor with multiple armature coils, featuring at least one winding-type air-core armature coil arranged eccentrically on a printed wiring board. The design includes a commutator and an eccentric weight, strategically placed to avoid overlap with the armature coils while maintaining functional efficacy. A magnet generates a magnetic field for the eccentric rotor through an axial air gap, with a brush delivering electric power to the air-core armature coils via the commutator.
Career Highlights
During his career, Koyanagi has not only focused on his projects but has also made a significant impact at Tokyo Parts Industrial Co., Ltd., where he currently works. His innovative spirit and commitment to advancing motor technology have been recognized within the industry, leading to several patent filings and the development of pioneering technologies.
Collaborations
Koyanagi's work has been enhanced through valuable collaborations with peers, notably Tadao Yamaguchi and Akihisa Inoue. Together, they have explored various aspects of motor design and functionality, contributing to advancements that have real-world applications.
Conclusion
Naohisa Koyanagi's inventive work in the field of motor technology illustrates the power of innovation and collaboration. With a total of ten patents under his name, his contributions continue to shape the landscape of the industry and inspire future inventors. His dedication to improving motor efficiency and design is a testament to his talent as an inventor.