This inventor holds 3 USPTO granted patents and 1 EPO patent. Top assignees: Mitsubishi Jidosha Kogyo Kabushiki Kaisha, Mitsubishi Denki Kabushiki Kaisha. Active years: 1996-2019.
Location History:
- Kyoto, JP (1996)
- Okazaki, JP (2019)
Company Filing History:


Years Active: 1996-2019
Title: Dairoku Ishii: Innovator in Hybrid Vehicle Technology
Introduction
Dairoku Ishii is a notable inventor based in Kyoto, Japan. He has made significant contributions to the field of hybrid vehicle technology, holding a total of 3 patents. His work focuses on enhancing the safety and efficiency of hybrid vehicles through innovative control systems.
Latest Patents
One of Ishii's latest patents is a control device for hybrid vehicles. This invention involves an ignition switch that, when turned on, detects abnormalities in electronic control instruments or sensors. Upon detection, a real failure is established, and a fail-safe process is initiated. After a predetermined period, fault determination is established, and a failure level is communicated. The hybrid fail-safe process is then executed. Once the abnormality is resolved, the real failure is not established, and the engine's fail-safe process concludes. When the ignition switch is turned off and then back on, the failure level communication to the hybrid control unit is halted, completing the hybrid fail-safe process. Another notable patent is a valve seating noise discriminating system for engines with variable valves.
Career Highlights
Throughout his career, Dairoku Ishii has worked with prominent companies such as Mitsubishi Jidosha Kogyo Kabushiki Kaisha and Mitsubishi Denki Kabushiki Kaisha. His experience in these organizations has allowed him to develop and refine his innovative ideas in automotive technology.
Collaborations
Ishii has collaborated with notable colleagues, including Tetsuo Maeda and Katsunori Ueda. Their combined expertise has contributed to the advancement of hybrid vehicle technologies.
Conclusion
Dairoku Ishii's contributions to hybrid vehicle technology through his patents and collaborations highlight his role as an influential inventor in the automotive industry. His innovative solutions continue to pave the way for safer and more efficient hybrid vehicles.