Osaka, Japan

Tadashi Doi

This inventor holds 6 USPTO granted patents. Top assignees: Kao Soap Company, Ltd., Sumitomo Chemical Company, Limited, Sumika Chemical Analysis Service, Limited. Active years: 1976-1990.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Tadashi Doi. Retrieved from https://idiyas.com/inventor/tadashi-doi

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


% Patents Active = 100.0

Average Co-Inventor Count = 2.6

ph-index = 6

Forward Citations = 71(Granted Patents)


Location History:

  • Osaka, JA (1976)
  • Toyonaka, JP (1986)
  • Osaka, JP (1979 - 1990)

Company Filing History:


Years Active: 1976-1990

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6 patents (USPTO):Explore Patents

Title: The Innovations of Tadashi Doi

Introduction

Tadashi Doi is a prominent inventor based in Osaka, Japan. He has made significant contributions to the field of chromatography, particularly through his innovative packing materials. With a total of 6 patents to his name, Doi's work has had a lasting impact on analytical chemistry.

Latest Patents

One of Doi's latest patents involves a packing material for chromatographic use. This material features an organosilane that is grafted onto an inorganic carrier with hydroxyl groups on its surface. The invention also includes a method for analyzing an enantiomer mixture using this packing material. This advancement is crucial for improving the efficiency and accuracy of chromatographic analyses.

Career Highlights

Throughout his career, Tadashi Doi has worked with notable companies such as Kao Soap Company, Ltd. and Sumitomo Chemical Company, Limited. His experience in these organizations has allowed him to refine his skills and contribute to various innovative projects.

Collaborations

Doi has collaborated with esteemed colleagues, including Isao Sekido and Ryoichi Tamaki. These partnerships have fostered a creative environment that has led to the development of groundbreaking technologies in the field.

Conclusion

Tadashi Doi's contributions to chromatography and his innovative spirit have established him as a key figure in the field. His patents and collaborations continue to influence the industry, showcasing the importance of innovation in scientific 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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