Location History:
- Zama, JP (2020 - 2022)
- Kanagawa, JP (2013 - 2023)
Company Filing History:
9 out of 58,129 
6 out of 145 
2 out of 4 Years Active: 2013-2025
Title: Innovation and Impact: The Inventions of Yasuhiro Shirai
Introduction
Yasuhiro Shirai, a prominent inventor based in Kanagawa, Japan, has made significant contributions to the field of motor control technology. With a remarkable portfolio that includes 17 patents, Shirai's innovations are shaping the future of electrical engineering and mechanics.
Latest Patents
Among his latest inventions, Yasuhiro Shirai has developed advanced motor control and electric pump devices. One of the key patents features a control device for a three-phase motor. This innovation includes a drive circuit that converts DC power supply voltage into three-phase AC voltage, which is then supplied to the motor. It also incorporates a voltage detection unit to monitor the terminal voltage across the motor's three phases. The control unit is crucial for detecting the zero-cross point of the terminal voltage and adjusting the drive circuit accordingly. Furthermore, Shirai's device corrects the first voltage value based on the output duty ratio, thereby enhancing the efficiency and performance of motor operation.
Another notable patent involves a motor control device that functions similarly but enhances the control by determining induced voltage changes in real-time. This capability allows for dynamic adjustments to the zero-cross determination level, making the system more adaptive to variations in motor performance.
Career Highlights
Yasuhiro Shirai has built a distinguished career through his work with leading companies, including Sony Corporation and Nidec Tosok Corporation. His expertise in motor control systems has been instrumental in advancing the technologies employed in these organizations. His role as an inventor and innovator has enabled him to contribute uniquely to the enhancement of motor dynamics and operational efficiency.
Collaborations
Throughout his career, Shirai has collaborated with esteemed colleagues such as Toshihiro Morita and Susumu Morita. These partnerships have fostered a collaborative environment that encourages the fusion of ideas and the development of groundbreaking technologies.
Conclusion
Yasuhiro Shirai's contributions to the field of motor control and electric devices exemplify the spirit of innovation. With his extensive patent portfolio and collaborative efforts, he continues to influence the industry and inspire future generations of inventors. His work not only reflects his technical prowess but also his commitment to advancing electrical engineering and technology.
Inventor’s Patent Attorneys refers to legal professionals with specialized expertise in representing inventors throughout the patent process. These attorneys assist inventors in navigating the complexities of patent law, including filing patent applications, conducting patent searches, and protecting intellectual property rights. They play a crucial role in helping inventors secure patents for their innovative creations.