This inventor holds 3 USPTO granted patents and 1 published patent application. Top assignees: Kobelco Cranes Co., Ltd., Kabushiki Kaisha Kobe Seiko Sho, Kobe Steel, Ltd.. Active years: 2015-2016.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Location History:
- Akashi, JP (2015)
- Hyogo, JP (2016)
Company Filing History:

Years Active: 2015-2016
Title: Naoya Kitazumi: Innovator in Hydraulic Technology
Introduction
Naoya Kitazumi is a prominent inventor based in Akashi, Japan. He has made significant contributions to the field of hydraulic technology, holding a total of 3 patents. His innovative designs focus on improving the efficiency and stability of hydraulic systems used in various working machines.
Latest Patents
One of Kitazumi's latest patents is a hydraulic driving apparatus for working machines. This invention aims to prevent an excessive decrease in pressure on the meter-in side, allowing for stable load movement in a lowering direction. The apparatus includes a hydraulic pump, a hydraulic actuator, a manipulation device, and a working hydraulic circuit with both meter-in and meter-out flow passages. It also features a control valve that regulates the supply of hydraulic fluid, ensuring the hydraulic actuator operates at a speed designated by the manipulation device. Additionally, the meter-in and meter-out flow adjusters are designed to maintain a greater meter-in flow rate than the meter-out flow rate.
Another notable patent by Kitazumi is an apparatus designed to lower a load. This invention comprises a hydraulic pump, a hydraulic actuator with first and second ports, and a hydraulic circuit that includes meter-in and meter-out flow passages. It also incorporates a regeneration flow passage with a check valve, a control valve, and a meter-out flow controller that adjusts the meter-out flow rate based on the manipulation device. The design ensures that the apparatus operates efficiently under various load conditions.
Career Highlights
Throughout his career, Naoya Kitazumi has worked with notable companies such as Kobelco Cranes Co., Ltd. and Kobe Steel, Ltd. His experience in these organizations has allowed him to refine his skills and contribute to advancements in hydraulic technology.
Collaborations
Kitazumi has collaborated with talented individuals in his field, including Hiroo Kondo and Takaharu Michida. These partnerships have fostered innovation and the development of cutting-edge hydraulic solutions.
Conclusion
Naoya Kitazumi's work in hydraulic technology exemplifies his commitment to innovation and efficiency. His patents reflect a deep understanding of hydraulic systems and their applications in working machines. His contributions continue to influence the industry and inspire future advancements.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile