Masahisa Kawamura

This inventor holds 18 USPTO granted patents and 1 published patent application. Top assignees: Kanzaki Kokyukoki Mfg. Co., Ltd., Other. Active years: 1987-2011.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Masahisa Kawamura. Retrieved from https://idiyas.com/inventor/masahisa-kawamura

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

USPTO Granted Patents = 18 (Patent Applications = 1)

% Patents Active = 55.6

Average Co-Inventor Count = 3.0

ph-index = 7

Forward Citations = 199(Granted Patents)

Location History:

Amagasaki-shi, Hyogo, JP (2007)
Hyogo, JP (2002 - 2010)
Amagasaki, JP (1987 - 2011)

Company Filing History:

17 out of 541

Kanzaki Kokyukoki Mfg. Co., Ltd.

patents

1 out of 834,513

Other

patents

Years Active: 1987-2011

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18 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 8002073 - Hydraulic drive working vehicle (2011-08-23),

2. 7775309 - Pump unit (2010-08-17),

3. 7762371 - Pump unit and hydrostatic transmission (2010-07-27),

4. 7677038 - Pump unit (2010-03-16),

5. 7430863 - Pump unit and hydrostatic transmission (2008-10-07),

6. 7370476 - Pump system, charge relief mechanism and oil pressure control mechanism (2008-05-13),

7. 7231765 - Pump unit and hydrostatic transmission (2007-06-19),

8. 6450309 - Transmission system structure of vehicle (2002-09-17),

9. 6199653 - Four-wheel driven vehicle (2001-03-13),

10. 5720214 - Fluid supply assembly for working vehicles (1998-02-24),

11. 5479845 - Fluid supply assembly for working vehicles (1996-01-02),

12. 5069037 - Fluid supply system for vehicles (1991-12-03),

13. 4893524 - HST system axle driving apparatus (1990-01-16),

14. 4866936 - Two-stage flow divider with pressure-relief valves in each stage to (1989-09-19),

15. 4856277 - Two-stage flow divider with constant orifice first stage in hydraulic (1989-08-15),

Title: Masahisa Kawamura: Innovator in Hydraulic Drive Technology

Introduction

Masahisa Kawamura is a prominent inventor based in Amagasaki, Japan. He has made significant contributions to the field of hydraulic drive technology, holding a total of 18 patents. His innovative designs have advanced the functionality and efficiency of hydraulic systems in various applications.

Latest Patents

Kawamura's latest patents include a hydraulic drive working vehicle and a pump unit. The hydraulic drive vehicle features a bypass valve that fluidly connects or disconnects a pump/second-motor line and a second-motor/first-motor line. This design allows for a variable range in which the traveling speed of the vehicle can be changed. The pump unit consists of multiple hydraulic pump bodies connected to hydraulic motor bodies, forming closed circuits. It includes a housing that accommodates the pump bodies, a charge pump body, and fluid passages for efficient operation.

Career Highlights

Throughout his career, Kawamura has worked with notable companies, including Kanzaki Kokyukoki Manufacturing Co., Ltd. His work has focused on enhancing hydraulic systems, contributing to advancements in machinery and vehicle technology.

Collaborations

Kawamura has collaborated with talented individuals such as Ryota Ohashi and Jiro Shibata. These partnerships have fostered innovation and development in hydraulic technology.

Conclusion

Masahisa Kawamura's contributions to hydraulic drive technology have made a lasting impact on the industry. His inventive spirit and dedication to improving hydraulic systems continue to inspire future innovations.

Profile summary based on public USPTO records.

Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]

1 patent pending: