This inventor holds 8 USPTO granted patents and 2 EPO patents. Top assignees: Hitachi Construction Machinery Co., Ltd., Hitachi Construction Machinery Tierra Co., Ltd.. Active years: 2002-2019.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Location History:
- Takaoka, JP (2002 - 2003)
- Namerikawa, JP (2018 - 2019)
Company Filing History:

Years Active: 2002-2019
Title: Yasuharu Okazaki: Innovator in Hydraulic Drive Systems
Introduction
Yasuharu Okazaki is a prominent inventor based in Namerikawa, Japan. He has made significant contributions to the field of hydraulic drive systems, particularly for construction machinery. With a total of 8 patents to his name, Okazaki's work has greatly influenced the efficiency and functionality of hydraulic systems in heavy equipment.
Latest Patents
Okazaki's latest patents include innovative designs for hydraulic drive systems that enhance the performance of construction machines. One notable patent is a hydraulic drive system that allows for efficient utilization of rated output torque from a prime mover. This system employs total torque control with high precision, utilizing a purely hydraulic structure to detect absorption torque from another hydraulic pump. By feeding back this absorption torque, the system modifies the delivery pressure of the main pump to simulate the absorption torque characteristics, thereby optimizing performance.
Another significant patent focuses on a hydraulic driving system for construction machines. This design ensures that when track motors are operated and the delivery pressure of the main pump increases, the system maintains functionality across multiple actuators. Even if one actuator reaches its stroke end, the other actuators continue to operate without interruption. This innovative approach allows for increased efficiency and reliability in hydraulic systems.
Career Highlights
Throughout his career, Yasuharu Okazaki has worked with notable companies such as Hitachi Construction Machinery Co., Ltd. and Hitachi Construction Machinery Tierra Co., Ltd. His experience in these organizations has allowed him to develop and refine his expertise in hydraulic systems, contributing to advancements in construction machinery.
Collaborations
Okazaki has collaborated with talented individuals in his field, including Yasutaka Tsuruga and Kiwamu Takahashi. These collaborations have fostered innovation and have led to the development of cutting-edge technologies in hydraulic drive systems.
Conclusion
Yasuharu Okazaki's contributions to hydraulic drive systems have made a lasting impact on the construction machinery industry. His innovative patents and collaborative efforts continue to drive advancements in this essential field.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile