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Kenji Tsujihara

This inventor holds 29 USPTO granted patents, primarily in Pharmaceutical Chemistry. Top assignee: Tanabe Seiyaku Company, Limited. Active years: 1980-2006.

USPTO Granted Patents = 29

% Patents Active = 89.7

Average Co-Inventor Count = 3.8

ph-index = 9

Forward Citations = 350(Granted Patents)

Location History:

Saitama-ken, JP (1998)
Urawa, JP (1980 - 2006)

Company Filing History:

29 out of 324

Tanabe Seiyaku Company, Limited

patents

Years Active: 1980-2006

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Areas of Expertise:

Camptothecin Derivatives

Baccatin Derivatives

Hypoglycemic Agents

Propiophenone Derivatives

Dihydrochalcone Derivatives

Nitrogen-Containing Compounds

Nitrosourea Compounds

Fat Emulsion

Platinum Complex

Organic Compounds

Heterocyclic Carboxylic Acids

Pharmaceutical Preparation

29 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 7060832 - Nitrogen-containing fused heterocyclic carboxylic acids having an absolute configuration of 'R' (2006-06-13),

2. 6716983 - S type 2-substituted hydroxy-2-indolidinylbutyric ester compounds and process for preparation thereof (2004-04-06),

3. 6617456 - Camptothecin derivatives (2003-09-09),

4. 6512118 - Camptothecin derivatives (2003-01-28),

5. 6388078 - S type 2-substituted hydroxy-2-indolidinylbutyric ester compounds and process for preparation thereof (2002-05-14),

6. 6277992 - S type 2-substituted hydroxy-2-indolidinylbutyric ester compounds and process for preparation thereof (2001-08-21),

7. 6114529 - S type 2-substituted hydroxy-2-indolidinylbutyric ester compounds and (2000-09-05),

8. 6048842 - Propiophenone derivatives and process for preparing the same (2000-04-11),

9. 6015901 - S type 2-substituted hydroxy-2-indolidinylbutyric ester compounds and (2000-01-18),

10. 5932732 - S type 2-substituted hydroxy-2-indolidinylbutyric ester compounds and (1999-08-03),

11. 5892043 - Camptothecin derivatives (1999-04-06),

12. 5837673 - Camptothecin derivatives (1998-11-17),

13. 5830873 - Propiophenone derivative and a process for preparing the same (1998-11-03),

14. 5767094 - Propiophenone derivative and processes for preparing the same (1998-06-16),

15. 5741816 - Hair-growth agent (1998-04-21),

Title: The Innovative Contributions of Kenji Tsujihara

Introduction

Kenji Tsujihara is a distinguished inventor based in Urawa, Japan. With an impressive portfolio of 29 patents, Tsujihara has made significant contributions to the field of chemical research and development.

Latest Patents

Among his most recent innovations are two notable patents. The first one involves nitrogen-containing fused heterocyclic carboxylic acids that have an absolute configuration of 'R'. This compound is characterized by the formula [XIX], wherein Y is a substituted or unsubstituted arylsulfonyl group or an alkylsulfonyl group, and n is either 0 or 1, including its salt forms. The second patent focuses on S-type 2-substituted hydroxy-2-indolidinylbutyric ester compounds and details the process for preparation thereof. These inventions highlight Tsujihara's innovative approach to solving complex chemical challenges.

Career Highlights

Kenji Tsujihara has had a fruitful career with reputable companies such as Tanabe Seiyaku Company, Limited and Tanabe Seivaku Co., Ltd. His work in these organizations has paved the way for advancements in pharmaceutical compounds, showcasing his expertise in the industry.

Collaborations

Throughout his career, Tsujihara has collaborated with notable colleagues, including Takayuki Kawaguchi and Sumihiro Nomura. These partnerships reflect his dedication to innovation and the collective pursuit of knowledge in the research environment.

Conclusion

Kenji Tsujihara exemplifies the spirit of innovation in the chemical industry, with his extensive patent portfolio underscoring his contributions. His latest patents and collaborations showcase his commitment to advancing research and development, making him a prominent figure in the field.

Profile summary based on public USPTO records.

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