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For the Inventor, By the Inventor

Tochigi, Japan

Yasuhiro Oshima

This inventor holds 6 USPTO granted patents. Top assignee: Hitachi, Ltd.. Active years: 1992-2001.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Yasuhiro Oshima. Retrieved from https://idiyas.com/inventor/yasuhiro-oshima-v5kepkwj

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 = 100.0

Average Co-Inventor Count = 4.8

ph-index = 4

Forward Citations = 65(Granted Patents)


Location History:

  • Tochigi, JP (1992 - 1995)
  • Tochigi-ken, JP (1996 - 2001)

Company Filing History:

goldMedal6 out of 42,731 
 
Hitachi, Ltd.
 patents

Years Active: 1992-2001

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6 patents (USPTO):Explore Patents
1. 6217303 - Displacement fluid machine (2001-04-17),
2. 6099279 - Displacement fluid machine (2000-08-08),
3. 5816783 - Electrically driven hermetic compressor (1998-10-06),
4. 5554017 - Scroll fluid machine, scroll member and processing method thereof (1996-09-10),
5. 5427512 - Scroll fluid machine, scroll member and processing method thereof (1995-06-27),
6. 5090882 - Rotary fluid machine having hollow vanes and refrigeration apparatus (1992-02-25),

Title: Yasuhiro Oshima: Innovator in Fluid Machine Technology

Introduction

Yasuhiro Oshima is a notable inventor based in Tochigi-ken, Japan. He has made significant contributions to the field of fluid machinery, holding a total of 6 patents. His work focuses on enhancing the performance and reliability of fluid machines, particularly through innovative designs.

Latest Patents

One of Oshima's latest patents is for a displacement fluid machine. This orbiting fluid machine features a low sliding movement speed, which minimizes vibrations. However, its performance tends to decrease at high rotational speeds. Oshima's design addresses this issue by incorporating a displacer that makes orbital motion within a casing, drawing and discharging the working fluid. The invention includes an oil retaining mechanism or a seal mechanism at each end surface of the displacer. This effectively seals the axial gaps, reducing leakage loss and achieving high performance and reliability.

Career Highlights

Yasuhiro Oshima is currently employed at Hitachi, Ltd., where he continues to innovate in the field of fluid machinery. His work has been instrumental in advancing the technology used in various applications, contributing to the efficiency and effectiveness of fluid machines.

Collaborations

Oshima has collaborated with several talented individuals, including Hirokatsu Kohsokabe and Hiroshi Iwata. These partnerships have fostered a creative environment that encourages the development of groundbreaking technologies.

Conclusion

Yasuhiro Oshima's contributions to fluid machine technology exemplify the spirit of innovation. His patents reflect a commitment to improving performance and reliability in engineering applications. Through his work at Hitachi, Ltd., he continues to influence the industry positively.

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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