Inventors with similar research interests:
Location History:
- Himeji, JP (1990 - 1995)
- Hyogo, JP (1990 - 2000)
- Tokyo, JP (1996 - 2006)
Company Filing History:
62 out of 21,351 
2 out of 488 
1 out of 3 Years Active: 1990-2006
Areas of Expertise:
Title: **Mitsuru Koiwa: A Pioneer in Ignition Systems**
Introduction
Mitsuru Koiwa is an esteemed inventor based in Tokyo, Japan, known for his significant contributions to the field of ignition apparatuses for internal combustion engines. With a remarkable portfolio of 66 patents, Koiwa has established himself as a leading figure in the innovation of engine technologies.
Latest Patents
Among Koiwa's recent inventions is an **ignition apparatus for internal combustion engines**, designed to reduce both size and cost. This innovative system incorporates multiple closed magnetic circuit cores within a casing, each featuring excitation and non-excitation portions. The design integrates coil parts, with primary and secondary coils arranged to envelop the excitation elements of the magnetic cores. Notably, this configuration allows adjacent non-excitation portions to partially overlap, optimizing the assembly's efficiency.
Another noteworthy patent from Koiwa is an **ignition apparatus** that effectively prevents mis-ignition in the presence of external disturbances. This invention utilizes an igniter linked to receive signals from an ECU and comprises a waveform shaper. This shaper enhances the voltage received through a signal line, ensuring reliable ignition under varying conditions. The pulse output circuit in this system meticulously adjusts the fail signal current to maintain voltage levels, thereby safeguarding the ignition process.
Career Highlights
Mitsuru Koiwa has made substantial contributions while working with esteemed companies such as Mitsubishi Electric Corporation and Mitsubishi Denki K.K. His work in these organizations has directly facilitated advancements in engine ignition technologies, showcasing his talent and dedication to innovation.
Collaborations
Throughout his career, Koiwa has collaborated with notable professionals in the field, including Masaaki Taruya and Koichi Okamura. Their combined expertise has been instrumental in the successful development and patenting of various ignition technologies.
Conclusion
In summary, Mitsuru Koiwa stands out as a significant innovator in the realm of ignition systems, with a diverse array of patents that reflect his engineering prowess. His work continues to impact the automotive industry positively, paving the way for more efficient and reliable engines.