Toyonaka, Japan

Masaru Nakao

This inventor holds 19 USPTO granted patents and 1 published patent application. Top assignee: Sumitomo Chemical Company, Limited. Active years: 1976-1981.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Masaru Nakao. Retrieved from https://idiyas.com/inventor/masaru-nakao

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

USPTO Granted Patents = 19 

% Patents Active = 100.0

Average Co-Inventor Count = 5.6

ph-index = 4

Forward Citations = 62(Granted Patents)


Location History:

  • Osaka, JA (1976 - 1977)
  • Toyonaka, JA (1976 - 1978)
  • Toyonaka, JP (1979 - 1981)

Company Filing History:


Years Active: 1976-1981

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19 patents (USPTO):Explore Patents

Title: The Innovations of Masaru Nakao: A Pioneer in Psychotropic Compounds

Introduction

Masaru Nakao, an inventive force from Toyonaka, Japan, has made significant contributions to the field of psychotropic pharmaceuticals. With an impressive portfolio of 19 patents, Nakao's work showcases innovative compounds that advance medical treatments and improve patient outcomes.

Latest Patents

Among his recent patents are groundbreaking butyrophenone compounds designed for enhanced psychotropic activities. These compounds are represented by complex formulas that highlight sophisticated chemical structures, such as those with halogen atoms, lower alkyl groups, and various substituents, affirming Nakao’s dedication to chemical innovation. His latest developments also include novel γ-piperidinobutyrophenone derivatives, further emphasizing his expertise in designing effective therapeutic agents.

Career Highlights

Nakao's career is marked by his tenure at Sumitomo Chemical Company, Limited, where he has channeled his inventive spirit into the research and development of psychotropic medications. His commitment to innovation has not only advanced pharmaceutical science but has also significantly impacted how psychotropic disorders are treated today.

Collaborations

Throughout his career, Nakao has partnered with esteemed colleagues such as Hisao Yamamoto and Kikuo Sasajima. These collaborations have fostered an environment of creativity and advancement, propelling the development of new and innovative compounds within the industry.

Conclusion

Masaru Nakao’s contributions to the field of psychotropic compounds indicate a remarkable journey of innovation and collaboration. With his extensive patent portfolio, Nakao stands as a pivotal figure in the pharmaceutical industry, continually pushing the boundaries of what is possible in medical science. His work not only reflects his genius as an inventor but also his unwavering commitment to improving healthcare through advanced chemical innovations.

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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