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Location History:
- Numadu, JP (2007 - 2010)
- Numazu, JP (1992 - 2017)
- Toyota, JP (2018 - 2020)
- Susono, JP (1985 - 2022)
Company Filing History:
74 out of 36,499 
1 out of 4 Years Active: 1985-2022
Title: The Innovative Contributions of Norihisa Nakagawa
Introduction
Norihisa Nakagawa is a prominent inventor based in Susono, Japan, known for his significant contributions to exhaust gas control technology. With a remarkable portfolio of 75 patents, Nakagawa has made strides in enhancing the efficiency and functionality of internal combustion engines.
Latest Patents
Among his latest innovations are two notable patents:
1. **Degradation Diagnosis Device for Exhaust Gas Control Catalyst**: This device features a downstream air-fuel ratio sensor and a control device that performs rich and lean processes alternately to diagnose degradation in the exhaust gas control catalyst. The control device assesses catalyst degradation based on the frequency of lean air-fuel ratio outputs from the sensor.
2. **Exhaust Purification System of Internal Combustion Engine**: This advanced exhaust purification system includes a catalyst with catalytic functionality, a particulate filter positioned downstream, and an oxygen feed device. The system detects ammonia concentration in exhaust gas and adjusts oxygen feed based on specific conditions, optimizing catalyst performance and particulate matter management.
Career Highlights
Nakagawa has spent a significant part of his career at Toyota Motor Corporation, contributing his expertise to various projects within the company. His work at such a prestigious organization underscores his influence and importance in the field of automotive engineering.
Collaborations
Throughout his career, Nakagawa has collaborated with talented professionals such as Shuntaro Okazaki and Yuji Yamaguchi, further enhancing the innovative environment surrounding his work. Their combined expertise plays a crucial role in advancing new technologies in the automotive sector.
Conclusion
Norihisa Nakagawa's dedication to innovation in exhaust gas control systems showcases his impact on the automotive industry. With numerous patents to his name and esteemed collaborations, his contributions continue to shape the future of sustainable engine technologies.
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