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For the Inventor, By the Inventor

Chita, Japan

Ryohei Kobayashi

This inventor holds 5 USPTO granted patents. Top assignees: Aichi Steel Works, Ltd., Chuo Hatsujo Kabushiki Kaisha. Active years: 1984-1988.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Ryohei Kobayashi. Retrieved from https://idiyas.com/inventor/ryohei-kobayashi-2da4jmyr

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

Calculating rank
USPTO Granted Patents = 5

% Patents Active = 100.0

Average Co-Inventor Count = 4.0

ph-index = 5

Forward Citations = 43(Granted Patents)


Location History:

  • Aichi, JP (1986)
  • Chita, JP (1984 - 1988)

Company Filing History:

goldMedal5 out of 58 
 
Aichi Steel Works, Ltd.
 patents
silverMedal5 out of 102 
 
Chuo Hatsujo Kabushiki Kaisha
 patents
where one patent can have more than one assignee

Years Active: 1984-1988

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5 patents (USPTO):Explore Patents
1. 4770721 - Process of treating steel for a vehicle suspension spring to improve (1988-09-13),
2. 4711675 - Process for improving the sag-resistance and hardenability of a spring (1987-12-08),
3. 4574016 - Method of treating steel for a vehicle suspension spring having a good (1986-03-04),
4. 4544406 - Spring steel having a good sag-resistance and a good hardenability (1985-10-01),
5. 4448617 - Steel for a vehicle suspension spring having good sag-resistance (1984-05-15),

Title: The Innovations of Ryohei Kobayashi

Introduction

Ryohei Kobayashi is an esteemed inventor based in Chita, Japan, recognized for his significant contributions to the field of materials science, particularly in the development of advanced spring steels. With a remarkable portfolio of 5 patents, Kobayashi's work has been instrumental in enhancing the performance and durability of vehicle suspension systems.

Latest Patents

Among Kobayashi's most notable innovations is a patent for a process of treating steel for vehicle suspension springs to improve sag-resistance. This spring steel formulation comprises by weight 0.5-0.8% carbon, 0.5-1.4% silicon, 0.5-1.5% manganese, and includes elements such as vanadium, niobium, and molybdenum. The composition ensures optimal performance, with the remaining material being iron and impurities.

Another of his recent patents focuses on improving both sag-resistance and hardenability of spring steel. This advanced formulation features 0.5-0.8% carbon, 1.5-2.5% silicon, and 1.6-2.5% manganese, accompanied by similar essential alloying elements. The development of these materials signifies a substantial leap forward in engineering applications for the automotive industry.

Career Highlights

Throughout his career, Ryohei Kobayashi has worked with esteemed companies, including Aichi Steel Works, Ltd. and Chuo Hatsujo Kabushiki Kaisha. His roles in these organizations have allowed him to not only innovate but also to collaborate effectively with other professionals in the materials engineering sector.

Collaborations

Kobayashi has had the privilege of working alongside talented individuals like Toshiro Yamamoto and Mamoru Kurimoto. These collaborations have further enhanced his innovative capabilities, leading to groundbreaking advancements in the industry.

Conclusion

Ryohei Kobayashi continues to be a pivotal figure in the advancement of materials technology, with his patents reflecting a commitment to improving the functionality and reliability of vehicle suspension systems. His work stands as a testament to the transformative power of innovation within industries reliant on high-performance materials.

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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