Location History:
- Ichikawa, JP (1985 - 1987)
- Kashiwa, JP (1988 - 1993)
- Kawaguchi, JP (1996 - 1997)
- Urawa, JP (1996 - 2002)
- Warabi, JP (2001 - 2003)
- Saitama, JP (1999 - 2010)
Company Filing History:
8 out of 8 
5 out of 12 
2 out of 224 
Years Active: 1985-2010
Title: Innovations of Takao Nakagawa: A Pioneer in Frictional Engagement Devices
Introduction
Takao Nakagawa is a notable inventor based in Urawa, Japan, recognized for his contributions to mechanical engineering, particularly in the field of frictional engagement devices. With an impressive portfolio of 19 patents, Nakagawa has made significant strides in enhancing the performance and efficiency of various mechanical components.
Latest Patents
Among Nakagawa's latest innovations are two pioneering patents that showcase his expertise. The first patent focuses on a friction member for frictional engagement devices and methods of production, aimed at reducing weight while enhancing impact resistance and improving sliding performance. This friction member, made from a carbon fiber/carbonaceous composite material, undergoes a heat treatment process, resulting in a porosity of 20-60%, optimizing its effectiveness in mechanical applications.
The second patent revolves around a planetary gear type center differential unit. This innovative design incorporates a carrier, first and second sun gears, and pinions, all while utilizing a pinion shaft made from carbon/carbon composite materials. This construction ensures optimal durability and performance, as the pinion shaft directly supports the pinion member during rotation, fostering efficient movement within the unit.
Career Highlights
Takao Nakagawa has built his career through impactful roles in esteemed organizations such as Across Co., Ltd. and Fuji Standard Research, Inc. His work has not only established him as a leading inventor but has also contributed to advancements in industrial applications of friction materials and gear systems, impacting various sectors that rely on reliable mechanical components.
Collaborations
Collaboration plays a significant role in the innovation process, and Nakagawa has worked alongside talented individuals like Mihoko Yamashita and Masaharu Tachibana. Their collective expertise has further enriched Nakagawa's inventions, facilitating effective problem-solving and creativity in product development.
Conclusion
Takao Nakagawa’s contributions to the field of mechanical engineering underscore his innovative spirit and commitment to advancing technology. With his extensive patent portfolio and collaborative efforts, he continues to shape the future of frictional engagement devices, demonstrating the profound impact that dedicated inventors can have on industries globally.