Yatabemachi, Japan

Akiharu Kajiwara

This inventor holds 22 USPTO granted patents and 3 EPO patents, primarily in Polyprenyl Compounds. Top assignees: Eisai Company, Limited, Eisai R&d Management Co., Ltd.. Active years: 1985-2007.

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

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


% Patents Active = 86.4


Average Co-Inventor Count = 9.3

ph-index = 5

Forward Citations = 170(Granted Patents)


Location History:

  • Yatabe, JP (1986)
  • Yatabemachi, JP (1986 - 1989)
  • Yatabecho, JP (1994)
  • Tsukuba-gun, JP (2000)
  • Ibaragi, JP (1985 - 2001)
  • London, GB (1998 - 2001)
  • Ibaraki, JP (1995 - 2004)
  • Tsukuba, JP (2007)

Company Filing History:


Years Active: 1985-2007

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Areas of Expertise:
2-Iminoimidazole Derivatives
2-Iminopyrrolidine Derivatives
Heterodiazinone Derivatives
Biphenyl Derivatives
Beta-Gamma-Dihydropolyprenyl Alcohol Derivatives
Oxazolidone Derivative
Polyprenyl Compound
Therapeutic Agent
Pharmaceutical Composition
Dolichol
Polyprenylcarboxylic Acid Amides
22 patents (USPTO):Explore Patents

Title: The Innovative Contributions of Akiharu Kajiwara

Introduction: Akiharu Kajiwara, based in Yatabemachi, Japan, is a prolific inventor known for his significant contributions to the field of chemistry. With an impressive portfolio of 22 patents to his name, Kajiwara has demonstrated a consistent commitment to innovation and research.

Latest Patents: Kajiwara's recent inventions include two noteworthy compounds. The first is a 2-iminoimidazole derivative, characterized by a complex molecular structure involving various substituents, including hydrogen and alkyl groups. The second patent features a 2-iminopyrrolidine derivative with similar complexity, involving benzene or pyridine rings and a variety of functional groups. Both compounds, or their respective salts, showcase the inventive prowess that Kajiwara brings to the scientific community.

Career Highlights: Throughout his career, Akiharu Kajiwara has been associated with leading organizations in the pharmaceutical industry such as Eisai Company, Limited and Eisai R&D Management Co., Ltd. His work in these companies has been pivotal to the advancement of novel therapeutic compounds.

Collaborations: Kajiwara has collaborated with several esteemed colleagues, including Takeshi Suzuki and Isao Yamatsu. Together, they have worked on various projects that reflect their dedication to enhancing drug development and innovative solutions in the field of medicine.

Conclusion: Akiharu Kajiwara's contributions to science and innovation are marked by his extensive patent portfolio and collaborative efforts in the pharmaceutical industry. His latest inventions illustrate his expertise and commitment to creating advanced solutions that can potentially lead to significant improvements in healthcare. Through continued collaboration and innovation, Kajiwara is set to further influence the field of chemistry and pharmaceutical research.

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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