Company Filing History:
Years Active: 1993-2020
Title: Kouji Hashimoto: Innovator in Oil Pressure Control and Lithography
Introduction
Kouji Hashimoto is a notable inventor based in Yokohama, Japan. He holds two patents that showcase his contributions to engineering and technology. His work primarily focuses on oil pressure control devices and exposure masks for lithography.
Latest Patents
One of Hashimoto's latest patents is an oil pressure control device. This device includes an oil cooler that cools engine oil circulating through a hydraulic circuit of an engine. It features a bypass oil passage that allows oil to bypass the cooler, an oil cooler bypass valve for switching the oil flow, and an oil pressure sensor that measures the first oil pressure. Additionally, a valve control unit regulates the opening and closing of the bypass valve to minimize the difference between the first oil pressure and a target second oil pressure, which is determined based on the engine's rotational speed and fuel injection quantity.
Another significant patent is related to an exposure mask, a method of manufacturing it, and an exposure method utilizing the mask. This exposure mask is designed for lithography and includes a light-transmitting opening with a main light-transmitting region and phase shift regions. The light transmitted through these regions interferes to create a sharp photo-intensity distribution, thereby enhancing the resolution of the exposure mask.
Career Highlights
Kouji Hashimoto has worked with prominent companies such as Toshiba Corporation and Isuzu Motors. His experience in these organizations has contributed to his expertise in developing innovative technologies.
Collaborations
Throughout his career, Hashimoto has collaborated with notable individuals, including Akihiro Nitayama and Makoto Nakase. These collaborations have likely enriched his work and led to advancements in his projects.
Conclusion
Kouji Hashimoto's contributions to the fields of oil pressure control and lithography demonstrate his innovative spirit and technical expertise. His patents reflect a commitment to improving engineering solutions and advancing technology.