Naobumi Oi

This inventor holds 6 USPTO granted patents. Top assignees: Sumitomo Chemical Company, Limited, Sumika Chemical Analysis Service, Limited. Active years: 1978-1990.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Naobumi Oi. Retrieved from https://idiyas.com/inventor/naobumi-oi

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

USPTO Granted Patents = 6

% Patents Active = 100.0

Average Co-Inventor Count = 2.8

ph-index = 4

Forward Citations = 107(Granted Patents)

Company Filing History:

6 out of 6,964

Sumitomo Chemical Company, Limited

patents

1 out of 4

Sumika Chemical Analysis Service, Limited

patents

where one patent can have more than one assignee

Years Active: 1978-1990

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6 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 4963254 - Packing material for chromatographic use (1990-10-16),

2. 4604207 - Packing materials for chromatographic use and a method for analysis of (1986-08-05),

3. 4512898 - Packing materials for chromatographic use and a method for analysis of (1985-04-23),

4. 4332591 - Analytical method and apparatus for the determination of total nitrogen (1982-06-01),

5. 4140496 - S-Triazine derivatives (1979-02-20),

6. 4104040 - Use of s-triazine derivatives in a gas chromatographic method (1978-08-01),

Title: Naobumi Oi: Innovator in Chromatographic Materials

Introduction

Naobumi Oi is a distinguished inventor based in Kyoto, Japan. He has made significant contributions to the field of chromatographic materials, holding a total of 6 patents. His work has advanced the methods used in chemical analysis and separation techniques.

Latest Patents

One of Naobumi Oi's latest patents involves a packing material for chromatographic use. This innovative packing material incorporates an organosilane of a specific formula, which is grafted onto an inorganic carrier with hydroxyl groups on its surface. This invention also includes a method for analyzing enantiomer mixtures, showcasing Oi's expertise in enhancing chromatographic techniques.

Career Highlights

Throughout his career, Naobumi Oi has worked with notable companies, including Sumitomo Chemical Company, Limited and Sumika Chemical Analysis Service, Limited. His experience in these organizations has allowed him to develop and refine his inventions, contributing to advancements in chemical analysis.

Collaborations

Naobumi Oi has collaborated with esteemed colleagues such as Hajimu Kitahara and Tadashi Doi. These partnerships have fostered innovation and have been instrumental in the development of his patented technologies.

Conclusion

Naobumi Oi's contributions to the field of chromatographic materials are noteworthy. His innovative patents and collaborations reflect his commitment to advancing chemical analysis techniques. His work continues to influence the industry and inspire future 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]