Tokyo, Japan

Yohei Ishikawa

This inventor holds 4 USPTO granted patents and 1 published patent application. Top assignees: Resonac Corporation, Hitachi Chemical Company, Ltd.. Active years: 2020-2026.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Yohei Ishikawa. Retrieved from https://idiyas.com/inventor/yohei-ishikawa-6hasiq0x

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

Calculating rank
USPTO Granted Patents = 4 

% Patents Active = 50.0

Average Co-Inventor Count = 3.7

ph-index = 1


Company Filing History:


Years Active: 2020-2026

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4 patents (USPTO):Explore Patents

Title: The Innovative Contributions of Yohei Ishikawa

Introduction

Yohei Ishikawa is a prominent inventor based in Tokyo, Japan. He has made significant contributions to the field of materials science, particularly in the development of adsorbent particles. With a total of three patents to his name, Ishikawa's work focuses on innovative methods for producing materials that can recover rare earth elements.

Latest Patents

Ishikawa's latest patents include advancements in adsorbent particles and methods for their production. One of his patents discloses adsorbent particles that consist of a carrier particle made from an organic polymer. This carrier particle is enhanced with an amino group-containing polymer that is adhered to its surface. Additionally, a diglycolic acid residue is bonded to the amino group of the polymer, improving the functionality of the adsorbent. Another patent details adsorbent particles that include a carrier particle made from a styrene-based monomer and a hydrophilic organic compound. This combination allows for effective recovery of rare earth elements, showcasing Ishikawa's innovative approach to material science.

Career Highlights

Yohei Ishikawa is currently employed at Hitachi Chemical Company, Ltd., where he continues to push the boundaries of innovation in his field. His work has not only contributed to the company's portfolio but has also advanced the understanding of adsorbent materials in various applications.

Collaborations

Ishikawa collaborates with notable colleagues such as Masahiro Aoshima and Masaru Watanabe. Their combined expertise fosters a creative environment that leads to groundbreaking innovations in materials science.

Conclusion

In summary, Yohei Ishikawa is a distinguished inventor whose work in adsorbent particles and methods for recovering rare earth elements has made a significant impact in the field. His contributions at Hitachi Chemical Company, Ltd. and collaborations with esteemed colleagues highlight his commitment to innovation and excellence.

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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