This inventor holds 4 USPTO granted patents and 1 published patent application and 3 EPO patents. Top assignees: Sumitomo Construction Machinery Co., Ltd., Sumitomo Construction Machinery. Active years: 2023-2026.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Company Filing History:
3 out of 73 
1 out of 28 Years Active: 2023-2026
Title: The Innovative Contributions of Riichi Nishikawara
Introduction
Riichi Nishikawara is a notable inventor based in Chiba, Japan. He has made significant contributions to the field of construction machinery, particularly in the design and functionality of excavators. With a total of 4 patents to his name, Nishikawara's work reflects a commitment to enhancing operational efficiency and safety in heavy machinery.
Latest Patents
Nishikawara's latest patents include innovative designs for excavators. One of his patents describes an excavator that features a lower travelling body and an upper rotating body. This design includes an excavation attachment with a boom, an arm, and a bucket. A control valve serves as a straight-travel valve, and a controller is configured to manage the functioning of the control valve. This controller allows for simultaneous movement of at least two components—either the boom, the arm, or the bucket—while the excavator remains stationary.
Another patent focuses on an excavator that incorporates a left main pump and a right main pump mounted on the upper rotating body. This design includes a control valve that acts as a confluence valve, merging operating oil from both pumps. The controller in this design enables the simultaneous movement of the boom, arm, and bucket while efficiently managing the operating oil flow.
Career Highlights
Riichi Nishikawara is currently associated with Sumitomo Construction Machinery Co., Ltd. His role in the company allows him to apply his innovative ideas and contribute to the advancement of construction technology. His work has been instrumental in improving the functionality and efficiency of excavators, making them more effective for various construction tasks.
Conclusion
Riichi Nishikawara's contributions to the field of construction machinery through his patents demonstrate his innovative spirit and dedication to enhancing excavator technology. His work continues to influence the industry, paving the way for future advancements in construction equipment.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile