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For the Inventor, By the Inventor

Tokyo, Japan

Yoshinori Ojima

This inventor holds 16 USPTO granted patents and 2 published patent applications and 6 EPO patents, primarily in Vacuum Pump Technology. Top assignees: Ebara Corporation, Ebara Densan Ltd.. Active years: 1992-2019.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Yoshinori Ojima. Retrieved from https://idiyas.com/inventor/yoshinori-ojima

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

Calculating rank
USPTO Granted Patents = 16 

% Patents Active = 93.8

 

Average Co-Inventor Count = 5.4

ph-index = 6

Forward Citations = 228(Granted Patents)


Location History:

  • Kanagawa, JP (1992)
  • Kanagawa-ken, JP (1998)
  • Fujisawa, JP (1998 - 2004)
  • Kamakura, JP (1998 - 2005)
  • Tokyo, JP (2012 - 2019)

Company Filing History:

goldMedal16 out of 2,581 
 
Ebara Corporation
 patents
silverMedal1 out of 13 
 
Ebara Densan Ltd.
 patents
where one patent can have more than one assignee

Years Active: 1992-2019

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Areas of Expertise:
Canned Motor
Vacuum Pump
Multishaft Electric Motor
Positive-Displacement Pump
Sealing Structure
Gas Transfer Machine
Pump Rotor Pairs
Balance Rings
Liquid Delivery Device
Two Stage Screw Pump
Heat Generation
Magnet Pumps
16 patents (USPTO):Explore Patents
1. 10320260 - Canned motor and vacuum pump (2019-06-11),
2. 9660496 - Canned motor and vacuum pump (2017-05-23),
3. 9614411 - Canned motor and vacuum pump (2017-04-04),
4. 9429166 - Sealing structure, vacuum pump motor including same sealing structure, and vacuum pump (2016-08-30),
5. 9291155 - Vacuum pump motor and vacuum pump having balance rings (2016-03-22),
6. 8251678 - Vacuum pump unit (2012-08-28),
7. 6902380 - Vacuum pump with pump rotor pairs and permanent magnet motor (2005-06-07),
8. 6761542 - Multishaft electric motor and positive-displacement pump combined with such multishaft electric motor (2004-07-13),
9. 6700273 - Gas transfer machine (2004-03-02),
10. 6447271 - Multishaft electric motor and positive-displacement pump combined with such multishaft electric motor (2002-09-10),
11. 6183218 - Multishaft electric motor and positive-displacement pump combined with such multishaft electric motor (2001-02-06),
12. 6092994 - Liquid delivery device, method of controlling such liquid delivery (2000-07-25),
13. 5846062 - Two stage screw type vacuum pump with motor in-between the stages (1998-12-08),
14. 5814913 - Multishaft electric motor and positive-displacement pump combined with (1998-09-29),
15. 5779453 - Vacuum pump motor arrangement having reduced heat generation (1998-07-14),

Title: Innovations of Yoshinori Ojima

Introduction

Yoshinori Ojima is a prominent inventor based in Tokyo, Japan. He has made significant contributions to the field of engineering, particularly in the development of advanced motor technologies. With a total of 16 patents to his name, Ojima's work has had a considerable impact on various industries.

Latest Patents

One of Ojima's latest patents is a canned motor designed to be coupled to a vacuum pump, serving as a rotary driving source for the pump. This innovative canned motor features a stator core and a rotor positioned on the inner side of the stator core. A non-conductive can is strategically placed between the stator core and the rotor, effectively separating them. The non-conductive can is constructed from materials such as resin, ceramic, or a composite thereof. It is bonded to the stator core using an adhesive, ensuring durability and efficiency in operation.

Career Highlights

Throughout his career, Yoshinori Ojima has worked with notable companies, including Ebara Corporation and Ebara Densan Ltd. His experience in these organizations has allowed him to refine his skills and contribute to groundbreaking technologies in the field of motors and pumps.

Collaborations

Ojima has collaborated with esteemed colleagues such as Kozo Matake and Takanori Inada. These partnerships have fostered an environment of innovation and creativity, leading to the development of advanced technologies.

Conclusion

Yoshinori Ojima's contributions to the field of engineering, particularly through his patented inventions, highlight his role as a leading inventor in Japan. His work continues to influence the industry and 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]
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