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For the Inventor, By the Inventor

Kanagawa, Japan

Chishiro Yamashina

This inventor holds 6 USPTO granted patents. Top assignees: Ebara Corporation, Other. Active years: 1997-2006.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Chishiro Yamashina. Retrieved from https://idiyas.com/inventor/chishiro-yamashina

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

USPTO Granted Patents = 6

% Patents Active = 33.3

Average Co-Inventor Count = 3.5

ph-index = 3

Forward Citations = 44(Granted Patents)


Location History:

  • Kanagawa-ken, JP (2002)
  • Fujisawa, JP (1997 - 2003)
  • Kanagawa, JP (2003 - 2006)

Company Filing History:

goldMedal5 out of 2,573 
 
Ebara Corporation
 patents
silverMedal1 out of 834,453 
Other
 patents

Years Active: 1997-2006

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6 patents (USPTO):Explore Patents
1. 7056107 - Vane type rotary machine (2006-06-06),
2. 6889730 - Hydraulic drive system (2005-05-10),
3. 6659121 - Solenoid and hydraulic control valve (2003-12-09),
4. 6629829 - Vane type rotary machine (2003-10-07),
5. 6453773 - Elevation and index apparatus of water hydraulic driven type (2002-09-24),
6. 5697401 - Hydraulic servovalve (1997-12-16),

Title: Chishiro Yamashina: Innovator in Rotary Machine Technology

Introduction

Chishiro Yamashina is a notable inventor based in Kanagawa, Japan. He has made significant contributions to the field of rotary machine technology, holding a total of 6 patents. His work focuses on improving the efficiency and functionality of hydraulic systems and rotary machines.

Latest Patents

Yamashina's latest patents include a vane-type rotary machine and a hydraulic drive system. The vane-type rotary machine is designed for applications using low-viscosity fluids, such as water. This invention features a rotor equipped with vanes, housed within a cam casing, and includes openings for fluid supply and return. The hydraulic drive system aims to maintain actuator efficiency while preventing corrosion when using water as an operating fluid. It consists of a main tank, return path, accessory tank, and a water disposal apparatus.

Career Highlights

Throughout his career, Chishiro Yamashina has worked with Ebara Corporation, where he has applied his innovative ideas to real-world applications. His experience in the industry has allowed him to develop practical solutions that enhance the performance of hydraulic systems.

Collaborations

Yamashina has collaborated with notable colleagues, including Shimpei Miyakawa and Masao Shinoda. These partnerships have contributed to the advancement of his inventions and the overall progress in rotary machine technology.

Conclusion

Chishiro Yamashina's contributions to the field of rotary machines and hydraulic systems demonstrate his innovative spirit and dedication to improving technology. His patents reflect a commitment to efficiency and functionality, making him a significant figure in his industry.

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]
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