Chiba, Japan

Katsumi Otsuka

This inventor holds 5 USPTO granted patents. Top assignees: Teibow Company Limited, Toplan Manufacturing Inc.. Active years: 1977-1989.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Katsumi Otsuka. Retrieved from https://idiyas.com/inventor/katsumi-otsuka-k2n2nbrq

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

Calculating rank

% Patents Active = 100.0

Average Co-Inventor Count = 1.3

ph-index = 4

Forward Citations = 30(Granted Patents)


Location History:

  • Funabashi, JA (1977 - 1978)
  • Funabashi, JP (1982)
  • Chiba, JP (1989)

Company Filing History:


Years Active: 1977-1989

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5 patents (USPTO):Explore Patents

Title: The Innovative Journey of Katsumi Otsuka

Introduction

Katsumi Otsuka is a notable inventor based in Chiba, Japan. He has made significant contributions to the field of innovation, particularly with his work on pen tip structures. With a total of five patents to his name, Otsuka has established himself as a key figure in his area of expertise.

Latest Patents

Among his latest patents, the pen tip structure stands out as a remarkable innovation. This invention showcases his ability to enhance everyday writing instruments, making them more efficient and user-friendly. His focus on improving the functionality of pen tips reflects his commitment to practical design.

Career Highlights

Throughout his career, Katsumi Otsuka has worked with several prominent companies, including Teibow Company Limited and Toplan Manufacturing Inc. His experience in these organizations has allowed him to refine his skills and contribute to various innovative projects. Otsuka's work has not only advanced his career but has also impacted the industry positively.

Collaborations

Otsuka has collaborated with talented individuals such as Tetsuo Shimoishi and Yasuhiro Aoki. These partnerships have fostered a creative environment that has led to the development of groundbreaking ideas and inventions.

Conclusion

Katsumi Otsuka's journey as an inventor is marked by his dedication to innovation and collaboration. His contributions, particularly in the realm of pen tip structures, highlight his significant impact on the industry. Otsuka's work continues to inspire future inventors and innovators.

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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