Company Filing History:
2 out of 3,252 
1 out of 36,771 
Years Active: 1980-1985
Title: Innovations of Yoshio Hirano
Introduction
Yoshio Hirano is a notable inventor based in Anjo, Japan. He has made significant contributions to the field of automotive technology, holding a total of 2 patents. His work focuses on enhancing vehicle diagnostics and electronic systems.
Latest Patents
One of his latest patents is a Motor Vehicle Diagnostic Monitoring System. This system is designed to detect and display malfunctions or abnormal operations occurring in various engine operation control computers. It includes a microcomputer, actuators, and sensors. Each engine operation control computer performs a diagnosis program as part of its control programs and produces a signal whenever a malfunction or abnormal operation is detected. A central supervisory system receives these signals and stores them separately for each control computer. A display unit then shows the stored signals in response to instructions from the central supervisory system.
Another significant patent is the Frequency-to-Current Conversion Circuit. This circuit comprises a charge/discharge circuit that charges or discharges with a first constant current in synchronism with each cycle of an input pulse signal that has a varying frequency. It also includes a voltage comparison circuit that detects a predetermined voltage attained by the charge/discharge circuit after a specific time interval, which depends on the value of the first constant current. An output circuit receives the output signal of the voltage comparison circuit and generates a second constant current during the predetermined time interval in synchronism with each cycle of the input pulse signal.
Career Highlights
Yoshio Hirano has worked with prominent companies in the automotive industry, including Nippondenso Co., Ltd. and Toyota Motor Corporation. His experience in these organizations has allowed him to develop innovative solutions that address critical issues in vehicle performance and diagnostics.
Collaborations
Throughout his career, Hirano has collaborated with talented individuals such as Takaaki Kato and Takeshi Ochiai. These partnerships have contributed to the advancement of his projects and the successful implementation of his inventions.
Conclusion
Yoshio Hirano's contributions to automotive technology through his patents demonstrate his commitment to innovation and excellence. His work continues to influence the industry and improve vehicle diagnostics and performance.