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For the Inventor, By the Inventor

Sakai, Japan

Tatsuo Otsuka

This inventor holds 3 USPTO granted patents. Top assignee: Showa Aluminum Corporation. Active years: 1989-1995.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Tatsuo Otsuka. Retrieved from https://idiyas.com/inventor/tatsuo-otsuka-m1kf7ba7

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

Calculating rank
USPTO Granted Patents = 3

% Patents Active = 100.0

Average Co-Inventor Count = 3.8

ph-index = 2

Forward Citations = 60(Granted Patents)


Location History:

  • Sakai, JP (1989 - 1990)
  • Oyama, JP (1995)

Company Filing History:

goldMedal3 out of 152 
 
Showa Aluminum Corporation
 patents

Years Active: 1989-1995

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3 patents (USPTO):Explore Patents
1. 5431802 - Cylinder tube and process for producing same (1995-07-11),
2. 4957159 - Aluminum heat exchanger provided with fins having hydrophilic coating (1990-09-18),
3. 4806436 - Substrate for amorphous silicon solar cells (1989-02-21),

Title: Innovations of Tatsuo Otsuka

Introduction

Tatsuo Otsuka is a notable inventor based in Sakai, Japan. He has made significant contributions to the field of aluminum technology, holding a total of 3 patents. His work focuses on enhancing the properties and applications of aluminum products.

Latest Patents

Otsuka's latest patents include innovative designs and processes. One of his patents is for a cylinder tube that features an aluminum tube with an outer oxide film hardness ranging from 150 HV to less than 350 HV, and an inner oxide film hardness between 350 HV and 650 HV. Another notable patent is for an aluminum heat exchanger equipped with fins that have a hydrophilic coating. This coating is created using a composition that includes an alkali silicate, an inorganic hardening agent, and a water-soluble organic high-molecular-weight compound.

Career Highlights

Otsuka is associated with Showa Aluminum Corporation, where he applies his expertise in aluminum technology. His work has contributed to advancements in the manufacturing and performance of aluminum products.

Collaborations

Throughout his career, Otsuka has collaborated with talented individuals such as Kiyoshi Tada and Kenji Tsukamoto. These collaborations have fostered innovation and development in their respective fields.

Conclusion

Tatsuo Otsuka's contributions to aluminum technology through his patents and collaborations highlight his role as a significant inventor in the industry. His work continues to influence advancements in aluminum applications.

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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