Location History:
- Himeji, JP (2013)
- Hyogo, JP (2010 - 2018)
Company Filing History:
9 out of 13,289 
4 out of 16,453 
Years Active: 2010-2018
Title: Kazuhiro Kumada: Innovator in Lighting Technology
Introduction
Kazuhiro Kumada is a prominent inventor based in Hyogo, Japan. He has made significant contributions to the field of lighting technology, holding a total of 13 patents. His innovative designs and methods have advanced the efficiency and functionality of lighting devices.
Latest Patents
Kumada's latest patents include a lighting device and luminaire that utilize a constant current to control a field-effect transistor (FET). This configuration adjusts the drain current to ensure that a detection voltage matches a reference voltage. The reference setter establishes this reference voltage as the sum of two voltages. The first voltage corresponds to the voltage across a detection resistor while a current, equal to that supplied to the light source, flows through it. The second voltage is derived from a second current flowing through a limiting resistor while the light source is operational. Another notable patent involves a control method for a lighting device, which includes a variable voltage source and a transistor that regulates the current through a light-emitting element based on dimming instructions.
Career Highlights
Throughout his career, Kazuhiro Kumada has worked with notable companies, including Panasonic Intellectual Property Management Co., Ltd. and Panasonic Corporation. His experience in these organizations has allowed him to refine his skills and contribute to groundbreaking innovations in lighting technology.
Collaborations
Kumada has collaborated with talented individuals such as Shinichi Murakami and Miyo Kangyo. These partnerships have fostered a creative environment that has led to the development of advanced lighting solutions.
Conclusion
Kazuhiro Kumada's work in the field of lighting technology exemplifies innovation and dedication. His numerous patents and collaborations highlight his commitment to advancing the industry. His contributions continue to influence the way we approach lighting solutions today.