Osaka, Japan

Ntn Corporation


USPTO Granted Patents = 2,495

% Expired Patents = 33.8



Trademarks = 16

Forward Citations = 12,340

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1,402 inventors (with patents filed for the assignee):

goldMedal Hiroshi Isobe (68 out of 83 patents)

silverMedal Yui Masuda (68 out of 68 patents)

bronzeMedal Takayoshi Ozaki (68 out of 83 patents)

4.  Toru Takahashi (68 out of 78 patents)

5.  Takayuki Norimatsu (63 out of 63 patents)

6.  Hisashi Ohtsuki (58 out of 58 patents)

7.  Tatsuro Sugiyama (52 out of 54 patents)

8.  Chikara Ohki (42 out of 42 patents)

9.  Hisaaki Kura (41 out of 41 patents)

10.  Masazumi Kobayashi (40 out of 40 patents)

11.  Koji Sato (40 out of 41 patents)

12.  Ken Yamamoto (40 out of 44 patents)

13.  Masahiro Ozawa (40 out of 40 patents)

14.  Akira Torii (39 out of 39 patents)

15.  Eiji Tajima (39 out of 39 patents)


Core Competencies:
Tapered Roller Bearing
Electric Actuator
Condition Monitoring System
Fluid Dynamic Bearing
Constant Velocity Universal Joint
Rolling Bearing
Power Generation System
Portable Wind Power
Mechanical Component
Clutch Unit
Sintered Bearing
Torque Inspection

2,495 patents:

Company Overview
Ntn Corporation, headquartered in Osaka, Japan, specializes in advanced bearing technology, focusing on the development and manufacturing of a wide range of bearing solutions. Their expertise encompasses tapered roller bearings, fluid dynamic bearings, and rolling bearings, catering to various industries including automotive and industrial machinery. Additionally, Ntn is engaged in innovative technologies such as electric actuators, condition monitoring systems, and portable wind power generation, positioning itself as a leader in enhancing mechanical efficiency and sustainability.
Profile summary synthesized from public USPTO records and patent filings.

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USPTO Data Jan 1 1976 - Oct 6 2026

Ntn Corporation USPTO Patent Assignee Logo
2,495 Patents

#12 in Osaka

#99 in Japan

#393 in the World

Osaka, JP
Osaka, Japan
Forward Citations = 12,340

1,402 inventors:

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Ntn Corporation. Retrieved from https://idiyas.com/company/ntn

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

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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