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For the Inventor, By the Inventor

Kuwana, Japan

Noriyuki Tsushima

This inventor holds 6 USPTO granted patents. Top assignees: Ntn Corporation, Ntn Toyo Bearing Co., Ltd.. Active years: 1985-2000.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Noriyuki Tsushima. Retrieved from https://idiyas.com/inventor/noriyuki-tsushima

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 = 1.8

ph-index = 4

Forward Citations = 84(Granted Patents)


Location History:

  • Mie, JP (1991 - 1999)
  • Kuwana, JP (1985 - 2000)

Company Filing History:

goldMedal4 out of 2,497 
 
Ntn Corporation
 patents
silverMedal2 out of 65 
 
Ntn Toyo Bearing Co., Ltd.
 patents

Years Active: 1985-2000

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6 patents (USPTO):Explore Patents
1. 6048414 - Rolling bearings and methods of producing the same (2000-04-11),
2. 5954894 - Bearing steel part for rolling bearing (1999-09-21),
3. 5658082 - Rolling contact bearing and a method of producing thereof (1997-08-19),
4. 4992111 - Bearing race member and method of fabrication (1991-02-12),
5. 4696581 - Rolling bearing (1987-09-29),
6. 4541157 - Method of producing split bearing rings (1985-09-17),

Title: Biography of Noriyuki Tsushima

Introduction

Noriyuki Tsushima is a prominent inventor based in Kuwana, Japan. He is known for his significant contributions to the field of rolling bearings, with a total of six patents to his name. His innovative work focuses on enhancing the performance and durability of bearings used in various applications.

Latest Patents

One of Tsushima's latest patents is related to rolling bearings and methods of producing the same. This invention aims to improve the acoustic performance of rolling type bearings, making them ideal for information systems. The enhancement is achieved by refining the microstructure of bearing steel to prevent the formation of indentations caused by high temperatures and impact loads. Another notable patent involves a bearing steel part for rolling bearings, which features a core portion with specific carbon and alloying element compositions. This design increases the rolling contact fatigue life and fracture toughness of the bearing.

Career Highlights

Throughout his career, Noriyuki Tsushima has worked with notable companies such as NTN Corporation and NTN Toyo Bearing Co., Ltd. His expertise in bearing technology has made him a valuable asset in the industry.

Collaborations

Tsushima has collaborated with esteemed colleagues, including Hirokazu Nakajima and Katsunori Itoh. Their combined efforts have contributed to advancements in bearing technology and innovation.

Conclusion

Noriyuki Tsushima's work in the field

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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