Location History:
- Fukuoka, JP (2000 - 2005)
- Chiyoda-ku, JP (2009)
- Tokyo, JP (2002 - 2021)
Company Filing History:
18 out of 15,844 
8 out of 21,351 
Years Active: 2000-2025
Title: Kazuaki Hiyama: Innovator in Semiconductor Technology
Introduction: Kazuaki Hiyama, a prominent inventor based in Tokyo, Japan, has made significant contributions to the field of semiconductor technology. With a total of 24 patents to his name, his work focuses on enhancing the efficiency and reliability of power conversion systems and semiconductor devices.
Latest Patents: Among his most recent innovations are two noteworthy patents:
1. **Semiconductor Device and Power Conversion System** - This invention aims to suppress malfunctions in overcurrent protection circuits due to a rise in sense voltage during the mirror period immediately after the turn-off of a semiconductor switching element. The device integrates a semiconductor switching element, a sense resistor, and an overcurrent protection circuit that monitors the sense voltage against a threshold value. It also includes a diode to clamp the sense voltage, ensuring reliable operation.
2. **Power Conversion Device** - This patent pertains to a control circuit that governs complementary switching devices connected serially between two potential levels. The innovative design includes separate control circuits for each switching device that adapt their functionality based on the temperature of one of the switches, allowing for more efficient operation.
Career Highlights: Kazuaki Hiyama has garnered extensive experience in prestigious organizations, including Mitsubishi Electric Corporation and Mitsubishi Denki Kabushiki Kaisha. His contributions in these companies have significantly advanced the field of semiconductor technology.
Collaborations: Throughout his career, Hiyama has collaborated with notable colleagues such as Khalid Hassan Hussein and Mikio Ishihara. These collaborations have fostered innovation and the successful development of advanced semiconductor technologies.
Conclusion: Kazuaki Hiyama's expertise and inventive spirit have positioned him as a key figure in the semiconductor industry. His latest patents reflect his commitment to developing efficient power conversion systems and safeguarding semiconductor operations from potential malfunctions. As technology continues to evolve, inventions like those of Hiyama will remain fundamental in shaping the future of electronic devices.
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.