Osaka, Japan

Kazuhiko Otawa

This inventor holds 4 USPTO granted patents and 1 published patent application, plus 2 CIPO patents. Top assignees: Nippon Pillar Packing Co., Ltd., Toyota Jidosha Kabushiki Kaisha. Active years: 2000-2006.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Kazuhiko Otawa. Retrieved from https://idiyas.com/inventor/kazuhiko-otawa

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

USPTO Granted Patents = 4 

% Patents Active = 50.0


Average Co-Inventor Count = 3.0

ph-index = 2

Forward Citations = 68(Granted Patents)


Company Filing History:


Years Active: 2000-2006

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4 patents (USPTO):Explore Patents

Title: Kazuhiko Otawa: Innovator in Fuel Cell Technology

Introduction

Kazuhiko Otawa is a notable inventor based in Osaka, Japan. He has made significant contributions to the field of fuel cell technology, holding a total of 4 patents. His innovative work focuses on improving the efficiency and performance of fuel cells through advanced separator designs.

Latest Patents

Kazuhiko Otawa's latest patents include a novel fuel cell separator. This invention involves a separator molded member produced by loading a complex compound that bonds graphite powder with a thermosetting resin into a mold. The design features ribs that form gas passages, with surfaces that are alkali-treated to expose flat and soft graphite particles. This configuration enhances the contact area with the electrode, significantly lowering contact resistance and improving fuel cell performance. Another patent details a similar separator production method, emphasizing the removal of a surface resin layer to further reduce contact resistance and enhance efficiency.

Career Highlights

Throughout his career, Kazuhiko Otawa has worked with prominent companies such as Nippon Pillar Packing Co., Ltd. and Toyota Motor Corporation. His experience in these organizations has allowed him to develop and refine his innovative ideas in fuel cell technology.

Collaborations

Kazuhiko has collaborated with notable coworkers, including Katsunori Sugita and Tsunemori Yoshida. Their combined expertise has contributed to the advancement of fuel cell technologies.

Conclusion

Kazuhiko Otawa's contributions to fuel cell technology through his innovative patents and collaborations highlight his role as a key inventor in this field. His work continues to influence advancements in energy efficiency and performance.

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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