Location History:
- Hitachi, JP (1998 - 2002)
- Hitachinaka, JP (2008 - 2011)
- Tokyo, JP (2009 - 2016)
Company Filing History:
8 out of 42,485 
4 out of 7 
1 out of 2,128 
Years Active: 1998-2016
Title: Toshifumi Yoshikawa: A Pioneer in Linear Synchronous Motor Technology
Introduction
Toshifumi Yoshikawa, an inventive mind hailing from Hitachinaka, Japan, has made significant contributions to the field of motor technology through his impressive portfolio of nine patents. His innovative work primarily focuses on advancements in linear synchronous motors, showcasing his expertise and commitment to engineering excellence.
Latest Patents
Among his recent patents, two stand out for their technical advancement and practical application. The first is a patent for a **Resolver**, which intricately calculates the number of turns and winding directions for cosine-phase and sine-phase coils wound around specific teeth. This resolver employs a detailed formula to optimize the performance of detecting coils and ensures accurate phase determination based on mechanical angles.
His second notable patent involves a **Control Apparatus and Method for Linear Synchronous Motor**. It addresses the timing of the pole position inference process in a vertical linear motor, introducing a delay mechanism after a brake release instruction. This innovation prevents malfunctions during operation and ensures smooth functioning, especially during vertical movements, enhancing the reliability of linear motor systems.
Career Highlights
Toshifumi Yoshikawa has built a robust career in engineering, having worked with prestigious companies such as Hitachi Ltd. and Hitachi Mito Engineering Co., Ltd. His contributions to these organizations reflect his dedication to advancing motor technology and improving system efficiencies.
Collaborations
Throughout his career, Yoshikawa has collaborated with talented individuals, including coworkers Satoru Toriyabe and Takamichi Hoshino. These partnerships have undoubtedly enriched his work, leading to innovative solutions in the engineering landscape.
Conclusion
Through his inventive spirit and significant contributions to the field of linear synchronous motors, Toshifumi Yoshikawa exemplifies the impact that dedicated inventors can have on technology. His patents not only demonstrate his brilliance as an engineer but also signify a progression in motor technology, paving the way for future innovations in this critical industry.
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.