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For the Inventor, By the Inventor

Tokyo, Japan

Kiyofumi Ishikawa

This inventor holds 17 USPTO granted patents. Top assignee: Banyu Pharmaceutical Co. Ltd. Active years: 1984-2000.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Kiyofumi Ishikawa. Retrieved from https://idiyas.com/inventor/kiyofumi-ishikawa

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

USPTO Granted Patents = 17

% Patents Active = 100.0

Average Co-Inventor Count = 4.9

ph-index = 8

Forward Citations = 204(Granted Patents)


Location History:

  • Chofu, JP (1984 - 1994)
  • Meguro, JP (1994)
  • Tsukuba, JP (1995 - 1996)
  • Tokyo, JP (1992 - 1997)
  • Menuma-machi, JP (1998)
  • Saitama, JP (2000)

Company Filing History:

goldMedal17 out of 237 
 
Banyu Pharmaceutical Co. Ltd
 patents

Years Active: 1984-2000

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17 patents (USPTO):Explore Patents
1. 6114524 - Process for producing halogenated heteroaryl compounds (2000-09-05),
2. 5714479 - Endothelin antagonistic heteroaromatic ring-fused cyclopentene (1998-02-03),
3. 5691315 - Endothelin antagonistic peptide derivatives (1997-11-25),
4. 5614498 - Endothelin antagonistic substance (1997-03-25),
5. 5498717 - 6,7-dialkoxy-3,4-diydroisoquinolin-8-yl compounds (1996-03-12),
6. 5496928 - Endothelin antagonistic substance (1996-03-05),
7. 5494897 - Endothelin antagonistic peptide (1996-02-27),
8. 5470833 - Endothelin antagonistic peptide derivatives (1995-11-28),
9. 5446164 - Process for preparing 6,7-dialkoxy-3,4-dihydroisoquinolin-8-ol (1995-08-29),
10. 5444152 - Endothelin antagonistic peptide derivatives (1995-08-22),
11. 5389620 - Endothelin antagonistic heteroaromatic ring-fused cyclopentene (1995-02-14),
12. 5380921 - Aminophosponic acid derivative (1995-01-10),
13. 5362736 - Isoquinoline derivatives (1994-11-08),
14. 5352704 - Guanidinobenzene derivatives (1994-10-04),
15. 5114918 - Endothelin antagonistic cyclic pentapeptides (1992-05-19),

Title: Kiyofumi Ishikawa: Innovator in Pharmaceutical Chemistry

Introduction

Kiyofumi Ishikawa is a prominent inventor based in Tokyo, Japan. He has made significant contributions to the field of pharmaceutical chemistry, holding a total of 17 patents. His work focuses on the development of innovative compounds that have potential therapeutic applications.

Latest Patents

Among his latest patents are the "Process for producing halogenated heteroaryl compounds" and "Endothelin antagonistic heteroaromatic ring-fused cyclopentene." These inventions reflect his expertise in creating complex chemical structures that can lead to new medical treatments.

Career Highlights

Kiyofumi Ishikawa is currently associated with Banyu Pharmaceutical Co. Ltd., where he continues to push the boundaries of pharmaceutical research. His career is marked by a commitment to advancing drug development through innovative chemical processes.

Collaborations

He has collaborated with notable colleagues such as Mitsuo Yano and Takashi Hayama, contributing to a dynamic research environment that fosters creativity and innovation.

Conclusion

Kiyofumi Ishikawa's work exemplifies the spirit of innovation in the pharmaceutical industry. His contributions through patents and collaborations are paving the way for future advancements in medicine.

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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