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For the Inventor, By the Inventor

Saitama, Japan

Yoshitaka Kajiwara

This inventor holds 5 USPTO granted patents. Top assignee: Nippon Kayaku Kabushiki Kaisha. Active years: 1993-2006.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Yoshitaka Kajiwara. Retrieved from https://idiyas.com/inventor/yoshitaka-kajiwara

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

USPTO Granted Patents = 5

% Patents Active = 100.0

Average Co-Inventor Count = 4.2

ph-index = 4

Forward Citations = 56(Granted Patents)


Location History:

  • Saitama-ken, JP (2000)
  • Yono, JP (1993 - 2002)
  • Saitama, JP (2004 - 2006)

Company Filing History:

goldMedal5 out of 799 
 
Nippon Kayaku Kabushiki Kaisha
 patents

Years Active: 1993-2006

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5 patents (USPTO):Explore Patents
1. 7108897 - Dye type polarizing plate (2006-09-19),
2. 6790490 - Dye type polarizing plate (2004-09-14),
3. 6420464 - Polyhydric phenol compounds, epoxy resins, epoxy resin compositions and cured products thereof (2002-07-16),
4. 6043333 - Modified epoxy resin, epoxy resin composition and cured product thereof (2000-03-28),
5. 5218061 - Partially post-glycidylated epoxy resin, epoxy resin composition and (1993-06-08),

Title: Innovations of Yoshitaka Kajiwara

Introduction

Yoshitaka Kajiwara is a notable inventor based in Saitama, Japan. He has made significant contributions to the field of polarizing technology, particularly through his innovative patents. With a total of 5 patents to his name, Kajiwara continues to push the boundaries of what is possible in his area of expertise.

Latest Patents

One of Kajiwara's latest inventions is a dye type polarizing plate. This invention relates to a polyvinyl alcohol type polarizing film or plate that comprises a water-soluble dye in a free acid form or a copper complex salt. The polarizing plate exhibits excellent polarizing performance capability and durability. It is particularly suitable for use in the green channel of a liquid crystal projector when specific conditions regarding the dye's structure and absorption wavelength are met.

Career Highlights

Kajiwara is currently employed at Nippon Kayaku Kabushiki Kaisha, where he continues to develop innovative solutions in polarizing technology. His work has garnered attention for its practical applications and effectiveness in enhancing display technologies.

Collaborations

Throughout his career, Kajiwara has collaborated with notable colleagues, including Kenichi Kuboki and Yoshio Shimamura. These collaborations have contributed to the advancement of their shared field and have led to the development of impactful technologies.

Conclusion

Yoshitaka Kajiwara's contributions to the field of polarizing technology are significant and noteworthy. His innovative patents and collaborations reflect his dedication to advancing technology in meaningful ways.

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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