Tatsuo Ohtsuka

This inventor holds 6 USPTO granted patents. Top assignees: Hoffmann-La Roche Inc., Basilea Pharmaceutica Ag. Active years: 1989-2005.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Tatsuo Ohtsuka. Retrieved from https://idiyas.com/inventor/tatsuo-ohtsuka

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 = 66.7

Average Co-Inventor Count = 4.3

ph-index = 3

Forward Citations = 40(Granted Patents)

Location History:

Fujisawa, JP (1989)
Kamakura, JP (1995 - 2005)

Company Filing History:

5 out of 5,026

Hoffmann-La Roche Inc.

patents

1 out of 72

Basilea Pharmaceutica Ag

patents

Years Active: 1989-2005

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6 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 6946472 - Polycyclic compounds exhibiting anti-tumor activities (2005-09-20),

2. 6680326 - Polycyclic compounds (2004-01-20),

3. 6376491 - Bicyclic compounds (2002-04-23),

4. 5430050 - Hispidospermidin (1995-07-04),

5. 4864023 - Pyrido(3,2,1-IJ)-1,3,4-benzoxadiazine derivatives (1989-09-05),

6. 4801584 - Pyrido(3,2,1-IJ)-1,3,4 benzoxadiazine derivatives (1989-01-31),

Title: Innovations of Tatsuo Ohtsuka

Introduction

Tatsuo Ohtsuka is a notable inventor based in Kamakura, Japan. He has made significant contributions to the field of pharmaceuticals, particularly in the development of compounds with anti-tumor activities. With a total of 6 patents to his name, Ohtsuka's work has the potential to impact cancer treatment significantly.

Latest Patents

One of his latest patents involves polycyclic compounds exhibiting anti-tumor activities. This invention focuses on novel polycyclic compounds of a specific formula, which includes various defined rings and substituents. These compounds demonstrate anti-tumor activity and are useful for treating cell proliferative disorders.

Career Highlights

Throughout his career, Tatsuo Ohtsuka has worked with prominent companies in the pharmaceutical industry, including Hoffmann-La Roche Inc. and Basilea Pharmaceutica AG. His experience in these organizations has contributed to his expertise in developing innovative therapeutic compounds.

Collaborations

Ohtsuka has collaborated with several professionals in his field, including Kenichi Kawasaki and Kazuteru Yokose. These partnerships have likely enhanced his research and development efforts, leading to successful innovations.

Conclusion

Tatsuo Ohtsuka's contributions to the field of pharmaceuticals, particularly through his innovative patents, highlight his role as a significant inventor. His work continues to pave the way for advancements in cancer treatment.

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]