Location History:
- Susono, JA (1976)
- Mishima, JP (1979 - 1984)
Company Filing History:
7 out of 1,838 
1 out of 3,252 Years Active: 1976-1984
Title: Norikatsu Ishikawa: Innovator in Air-Fuel Ratio Control Technology
Introduction
Norikatsu Ishikawa is a prominent inventor based in Mishima, Japan. He has made significant contributions to the field of internal combustion engines, particularly in air-fuel ratio control devices. With a total of 7 patents to his name, Ishikawa's work has had a lasting impact on automotive technology.
Latest Patents
Ishikawa's latest patents include innovative designs for air-fuel ratio control devices in internal combustion engines. One notable invention features a carburetor equipped with a main air bleed passage and a slow air bleed passage. This design utilizes a single electromagnetic control valve to maintain the air-fuel ratio at the stoichiometric level. The control valve consists of a first reed valve in the slow air bleed passage and a second reed valve in the main air bleed passage, both actuated simultaneously by an electromagnetic device. Another patent describes an air-fuel ratio control device that adjusts the mixture fed into the engine's cylinder based on signals from an oxygen concentration detector in the exhaust passage. This technology ensures optimal performance during vehicle deceleration by storing and applying the mean value of the potential level to the control valve.
Career Highlights
Throughout his career, Ishikawa has worked with notable companies in the automotive industry, including Toyota Motor Corporation and Nippondenso Co., Ltd. His experience in these organizations has allowed him to refine his expertise in engine technology and contribute to advancements in fuel efficiency and emissions control.
Collaborations
Ishikawa has collaborated with esteemed colleagues such as Haruyuki Obata and Takao Tate. Their combined efforts have led to innovative solutions in the field of automotive engineering.
Conclusion
Norikatsu Ishikawa's contributions to air-fuel ratio control technology have established him as a key figure in the automotive industry. His patents reflect a commitment to improving engine performance and efficiency.