Osaka, Japan

Hiroyuki Tsujiwaki

This inventor holds 3 USPTO granted patents and 6 published patent applications and 3 EPO patents. Top assignee: Sumitomo Electric Fine Polymer, Inc.. Active years: 2016-2019.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Hiroyuki Tsujiwaki. Retrieved from https://idiyas.com/inventor/hiroyuki-tsujiwaki

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 = 3.6

ph-index = 1


Company Filing History:


Years Active: 2016-2019

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3 patents (USPTO):Explore Patents

Title: Hiroyuki Tsujiwaki: Innovator in Porous Filter Technology

Introduction

Hiroyuki Tsujiwaki is a notable inventor based in Osaka, Japan. He has made significant contributions to the field of materials science, particularly in the development of porous filter technologies. With a total of 3 patents to his name, Tsujiwaki continues to push the boundaries of innovation in his field.

Latest Patents

Tsujiwaki's latest patents include a groundbreaking porous filter. This filter features a porous laminate composed of multiple biaxially stretched porous sheets made of polytetrafluoroethylene (PTFE). The specifications of the porous laminate are defined by specific expressions for the Gurley number G and the bubble point B (kPa). His other notable patent is for a porous polytetrafluoroethylene film. This film comprises a fluororesin with PTFE as the main component, characterized by an envelope surface area of resin fibers per film and a melting point peak of 333°C or lower.

Career Highlights

Hiroyuki Tsujiwaki is currently employed at Sumitomo Electric Fine Polymer, Inc. His work at this esteemed company has allowed him to focus on innovative solutions in polymer technology. His expertise in porous materials has positioned him as a key player in the industry.

Collaborations

Tsujiwaki has collaborated with talented coworkers such as Atsushi Uno and Fumihiro Hayashi. Their combined efforts have contributed to the advancement of porous filter technologies and have fostered a collaborative environment for innovation.

Conclusion

Hiroyuki Tsujiwaki is a distinguished inventor whose work in porous filter technology has made a significant impact in the field. His patents reflect his commitment to innovation and excellence in materials science.

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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