Location History:
- Himeji, JP (2014)
- Hyogo, JP (2019)
Company Filing History:
1 out of 13,307 
1 out of 16,453 
Years Active: 2014-2019
Title: Kazuhiko Harada: Innovator in Lighting Technology
Introduction
Kazuhiko Harada is a notable inventor based in Hyogo, Japan. He has made significant contributions to the field of lighting technology, holding a total of 2 patents. His work focuses on enhancing the efficiency and functionality of lighting devices.
Latest Patents
Harada's latest patents include a lighting device and an illuminating fixture. The lighting device features a power conversion circuit and a control circuit. The power conversion circuit consists of a high voltage side output terminal and a low voltage side output terminal connected to a light source, along with a step-down chopper circuit. The control circuit manages the lighting operation by controlling the power conversion circuit to develop a DC output voltage between the two terminals. It also initiates a protective operation to limit the current supplied to the light source when the output voltage reaches a threshold value, which is between 1.2 to 1.3 times the rated voltage of the light source.
Another significant patent is for an electronic ballast and method for providing a DC voltage component during lamp startup. This invention includes a discharge lamp ballast and a method of operation that generates a DC component in the output voltage during the lamp starting operation. The ballast features an inverter with four switches arranged in a full-bridge configuration, a resonant circuit, and a control circuit. The method involves sweeping the inverter's operating frequency within a predetermined range, including the resonant frequency, to generate a high voltage for igniting the lamp.
Career Highlights
Kazuhiko Harada has worked with prominent companies such as Panasonic Intellectual Property Management Co., Ltd. and Panasonic Corporation. His experience in these organizations has allowed him to develop innovative solutions in lighting technology.
Collaborations
Throughout his career, Harada has collaborated with notable colleagues, including Akira Nakajo and Jun Kumagai. Their teamwork has contributed to advancements in the field of lighting devices.
Conclusion
Kazuhiko Harada's contributions to lighting technology through his patents and collaborations highlight his role as an influential inventor. His work continues to impact the industry positively.