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For the Inventor, By the Inventor

Sapporo, Japan

Yasuchika Hasegawa

This inventor holds 15 USPTO granted patents and 3 published patent applications and 4 EPO patents, primarily in Rare Earth Complexes. Top assignees: Hokkaido University, Nara Institute of Science and Technology, Shizuoka University. Active years: 2010-2026.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Yasuchika Hasegawa. Retrieved from https://idiyas.com/inventor/yasuchika-hasegawa

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

Calculating rank
USPTO Granted Patents = 15 

% Patents Active = 46.7


Average Co-Inventor Count = 3.8

ph-index = 2

Forward Citations = 11(Granted Patents)


Location History:

  • Nara, JP (2012)
  • Ikoma, JP (2010 - 2015)
  • Sapporo, JP (2013 - 2022)

Company Filing History:

goldMedal10 out of 443 
 
Hokkaido University
 patents
silverMedal5 out of 114 
 
Nara Institute of Science and Technology
 patents
bronzeMedal1 out of 190 
 
Shizuoka University
 patents
4. 2 out of 834,601 
Other
 patents
where one patent can have more than one assignee

Years Active: 2010-2026

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Areas of Expertise:
Rare Earth Complex
Light-Emitting Material
Polymer Complex
Luminescent Molded Article
Thin Film
Nanocrystals
Wavelength Conversion Material
Security Material
Vinyl Greenhouse
Europium Compound
High Emission Complex
Information Identification
15 patents (USPTO):Explore Patents
1. 12606738 - Rare earth complex (2026-04-21),
2. 12312369 - Rare-earth complex, light-emitting material, light-emitting object, light-emitting device, interlayer for laminated glass, laminated glass, windshield for vehicle, wavelength conversion material, and security material (2025-05-27),
3. 12291545 - Rare earth complex, rare earth complex solution, luminescent molded article, method for producing luminescent product, luminescent sheet, and vinyl greenhouse for agriculture (2025-05-06),
4. 11499093 - Rare earth complex and light emitting element (2022-11-15),
5. 10745614 - Rare-earth complex polymer (2020-08-18),
6. 10399999 - Polymer complex and production process therefor (2019-09-03),
7. 10329480 - Sheet integrated rare earth complex and use thereof (2019-06-25),
8. 9280002 - Thin film and nanocrystals of europium(II) compound doped with metal ions (2016-03-08),
9. 9261718 - Composite thin film and composite nanocrystals containing europium (II) compound and metal (2016-02-16),
10. 9051427 - Rare-earth complex polymer and plastic molded product (2015-06-09),
11. 8975385 - Rare-earth complex and uses thereof (2015-03-10),
12. 8674116 - Metal complex and use thereof (2014-03-18),
13. 8545807 - Near infrared high emission rare-earth complex (2013-10-01),
14. 8182774 - Eu(III) complex and nanosized EuSe crystal obtained therefrom (2012-05-22),
15. 7796242 - Information identification device, information identification method, and information identification system (2010-09-14),

Title: Yasuchika Hasegawa: Pioneering Innovator in Rare-Earth Complexes

Introduction: Yasuchika Hasegawa, a visionary inventor based in Sapporo, Japan, has made significant contributions to the global tech community with his dedication to innovation and relentless pursuit of technological advancement. With a total of 12 patents under his belt, Hasegawa's work has cemented his position as a leading figure in the field of rare-earth complexes.

Latest Patents: Hasegawa's latest patents showcase his expertise in rare-earth complex technologies. One of his recent inventions includes a rare-earth complex that features a condensed polycyclic aromatic group coordinated with a rare earth ion, demonstrating his sophistication in material science. Additionally, his rare-earth complex polymer, which incorporates trivalent rare-earth ions and a phosphine oxide bidentate ligand, highlights his innovative approach to polymer chemistry.

Career Highlights: Hasegawa has been associated with esteemed institutions such as the National University Corporation Hokkaido University and the National University Corporation Nara Institute of Science and Technology. His tenure at these institutions has provided him with a fertile ground for research and development, leading to the creation of groundbreaking technologies in the field of rare-earth complexes.

Collaborations: Throughout his career, Hasegawa has worked closely with talented individuals such as Koji Fushimi and Tsuyoshi Kawai. These collaborations have not only enriched his research endeavors but have also resulted in the successful realization of innovative projects that have garnered attention on a global scale.

Conclusion: Yasuchika Hasegawa's unwavering commitment to pushing the boundaries of technological innovation in the realm of rare-earth complex materials has established him as a pioneering inventor in the global tech landscape. His impressive portfolio of patents, coupled with his collaborative spirit and dedication to excellence, underscores his influential role in shaping the future of materials science and technology.

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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