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For the Inventor, By the Inventor

Yamaguchi, Japan

Masakazu Nishiyama

This inventor holds 9 USPTO granted patents and 5 EPO patents. Top assignees: Tosoh Corporation, Tosch Corporation. Active years: 1999-2017.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Masakazu Nishiyama. Retrieved from https://idiyas.com/inventor/masakazu-nishiyama

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

USPTO Granted Patents = 9

% Patents Active = 88.9


Average Co-Inventor Count = 2.9

ph-index = 5

Forward Citations = 61(Granted Patents)


Location History:

  • Mie-ken, JP (2000)
  • Yokkaichi, JP (1999 - 2002)
  • Shunan, JP (2007 - 2015)
  • Yamaguchi, JP (2009 - 2017)

Company Filing History:

goldMedal8 out of 923 
 
Tosoh Corporation
 patents
silverMedal1 out of 4 
 
Tosch Corporation
 patents

Years Active: 1999-2017

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9 patents (USPTO):Explore Patents
1. 9718905 - Polythiophene, water-soluble electrically conductive polymer using it, and method for producing it (2017-08-01),
2. 8993805 - Benzofluorene compound and use thereof (2015-03-31),
3. 7803953 - Catalyst for producing arylamine and process for producing arylamine by means thereof (2010-09-28),
4. 7608680 - Triarylamine polymer, process for producing the same, and use thereof (2009-10-27),
5. 7482490 - Amine compound having fluorene group as framework, process for producing the amine compound, and use of the amine compound (2009-01-27),
6. 7189877 - Arylamine derivatives having fluorene skeleton, synthetic intermediates thereof, processes of producing those, and organic electrolumivescene devices (2007-03-13),
7. 6346621 - Nitrogen-heterocyclic compound and process for production thereof (2002-02-12),
8. 6034206 - Polyaryleneamines and a process for their production (2000-03-07),
9. 5929281 - Process for producing heterocyclic aromatic amine or arylamine (1999-07-27),

Title: Masakazu Nishiyama: Innovator in Conductive Polymers

Introduction

Masakazu Nishiyama is a prominent inventor based in Yamaguchi, Japan. He has made significant contributions to the field of conductive polymers, holding a total of 9 patents. His work focuses on developing innovative materials that enhance electrical conductivity and durability.

Latest Patents

Nishiyama's latest patents include a water-soluble polythiophene, which serves as an electrically conductive material. This invention provides a method for producing polythiophene by polymerizing thiophene compounds in water or an alcohol solvent with the presence of an oxidizing agent. Another notable patent involves a benzofluorene compound that exhibits high hole-transporting ability and durability, making it a valuable material in various applications.

Career Highlights

Throughout his career, Nishiyama has worked with notable companies such as Tosoh Corporation and Tosch Corporation. His experience in these organizations has allowed him to refine his expertise in polymer science and contribute to advancements in the field.

Collaborations

Nishiyama has collaborated with esteemed colleagues, including Hisao Eguchi and Naoki Matsumoto. These partnerships have fostered innovation and the exchange of ideas, further enhancing his contributions to the industry.

Conclusion

Masakazu Nishiyama's work in the development of conductive polymers has positioned him as a key figure in the field. His innovative patents and collaborations reflect his commitment to advancing technology and 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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