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For the Inventor, By the Inventor

Oita, Japan

Tetuo Nakajo

This inventor holds 3 USPTO granted patents. Top assignee: Showa Denko K.k.. Active years: 1991-1993.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Tetuo Nakajo. Retrieved from https://idiyas.com/inventor/tetuo-nakajo

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

USPTO Granted Patents = 3

% Patents Active = 100.0

Average Co-Inventor Count = 4.6

ph-index = 2

Forward Citations = 22(Granted Patents)


Company Filing History:

goldMedal3 out of 1,961 
 
Showa Denko K.k.
 patents

Years Active: 1991-1993

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3 patents (USPTO):Explore Patents
1. 5208302 - Catalyst, process for preparation of same and process for polymerization (1993-05-04),
2. 5049533 - Catalyst, process for preparation of same, and process for (1991-09-17),
3. 5041403 - Catalyst process for preparation of same, and process for polymerization (1991-08-20),

Title: The Innovations of Tetuo Nakajo

Introduction

Tetuo Nakajo is a prominent inventor based in Oita, Japan. He has made significant contributions to the field of polymerization through his innovative catalyst compositions. With a total of 3 patents, Nakajo's work has had a substantial impact on the industry.

Latest Patents

His latest patents include a catalyst composition for use in the polymerization of olefins. This composition consists of a catalyst component containing magnesium, titanium, a halogen, and an ingredient derived from a keto-ester compound, along with an organic aluminum compound. The catalyst activity and capability of providing a highly stereoregular polymer are enhanced by a specific preparation process involving the treatment of the solid catalyst component with a keto-ester.

Career Highlights

Tetuo Nakajo is associated with Showa Denko K.K., where he has been instrumental in advancing catalyst technology. His work has not only contributed to the efficiency of polymerization processes but has also paved the way for new applications in various industries.

Collaborations

He has collaborated with notable coworkers such as Masaki Fushimi and Shigenobu Miyake, further enhancing the innovative environment at Showa Denko K.K.

Conclusion

Tetuo Nakajo's contributions to catalyst technology and polymerization processes highlight his role as a key inventor in the field. His innovative work continues to influence advancements in the industry.

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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