This inventor holds 1 USPTO granted patent. Top assignee: Hitachi Construction Machinery. Active years: 2026.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Company Filing History:
Years Active: 2026
Title: Daigoro Kamoto: Advancing Hydraulic Fluid Management in Construction Machinery
Introduction
Daigoro Kamoto is an inventor associated with Hitachi Construction Machinery in Chiyoda-ku, Japan. His patent work addresses hydraulic fluid maintenance in construction equipment, with the goal of extending the intervals between fluid replacements.
Latest Patents
Kamoto is associated with one patent, titled “Construction machine.” The invention describes a hydraulic excavator equipped with an additive tank and a supply line that delivers additive to the hydraulic fluid tank. An on-off valve controls the additive supply, while a sensor monitors the degree of oxidation in the hydraulic fluid.
A controller can prompt an operator to open the valve or open it automatically when the rate of fluid oxidation reaches a specified threshold. It can also initiate the same action after the machine has operated for a predetermined period since the fluid was replaced or since the valve was last closed. By responding to oxidation and operating time, the system is designed to help maintain fluid condition and increase the intervals between replacements.
Career Highlights
Kamoto’s listed patent reflects an engineering focus on practical maintenance systems for construction machinery. The invention combines fluid-condition sensing, additive delivery, and controller-based operation to support hydraulic system upkeep.
Collaborations
Kamoto’s work is associated with Hitachi Construction Machinery. His listed coworkers include Ryo Ota and Kenji Kawasaki.
Conclusion
Daigoro Kamoto’s patent presents a sensor-guided approach to hydraulic fluid management, using controlled additive delivery to help extend replacement intervals in construction machinery.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile