This inventor holds 7 USPTO granted patents. Top assignees: Mitsubishi Jukogyo Kabushiki Kaisha, Matsushita Tsushin Kogyo Kabushiki Kaisha. Active years: 1981-1996.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Location History:
- Kakogawa, JP (1981)
- Tokasago, JP (1990)
- Hyogo, JP (1991)
- Takasago, JP (1985 - 1996)
Company Filing History:

Years Active: 1981-1996
Title: Riichiro Yamashita: Innovator in Vehicle Detection and Toll Systems
Introduction
Riichiro Yamashita is a notable inventor based in Takasago, Japan. He has made significant contributions to the fields of vehicle detection systems and toll road technology. With a total of 7 patents to his name, Yamashita's work has had a considerable impact on transportation safety and efficiency.
Latest Patents
One of his latest inventions is a vehicle detecting system designed to accurately identify vehicles under challenging conditions. This system utilizes a one-dimensional CCD camera mounted above the road surface to provide a light amount signal across the lane width. It effectively detects vehicles even when they are side by side or when a motorcycle passes another vehicle in a traffic jam. The system's signal processing device analyzes disturbances in the light signal to confirm the presence of a vehicle.
Another significant patent is a magnetic recording circuit for toll road tickets. This circuit reads toll road tickets by detecting a mark for magnetic recording density discrimination. It allows for the coexistence of tickets with different magnetic recording densities or systems, enhancing the efficiency of toll collection processes.
Career Highlights
Yamashita has worked with prominent companies such as Mitsubishi Heavy Industries and Panasonic Corporation. His experience in these organizations has contributed to his expertise in developing innovative technologies.
Collaborations
Throughout his career, Yamashita has collaborated with notable colleagues, including Hideo Urata and Naoshi Noguchi. These partnerships have fostered a creative environment that has led to the development of groundbreaking inventions.
Conclusion
Riichiro Yamashita's contributions to vehicle detection and toll systems exemplify his innovative spirit and dedication to improving transportation technology. His patents reflect a commitment to enhancing safety and efficiency on the roads.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile