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For the Inventor, By the Inventor

Tokyo, Japan

Banyu Pharmaceutical Co. Ltd

Calculating rank
USPTO Granted Patents = 237

% Expired Patents = 29.1



Forward Citations = 1,277

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318 inventors (with patents filed for the assignee):

goldMedal Akio Kanatani (40 out of 46 patents)

silverMedal Susumu Nakagawa (38 out of 38 patents)

bronzeMedal Takehiro Fukami (32 out of 36 patents)

4.  Ryosuke Ushijima (25 out of 25 patents)

5.  Yoshikazu Iwasawa (23 out of 25 patents)

6.  Norikazu Otake (23 out of 25 patents)

7.  Hiroyuki Suda (22 out of 26 patents)

8.  Kiyofumi Ishikawa (17 out of 17 patents)

9.  Katsuhisa Kojiri (17 out of 17 patents)

10.  Takashi Hayama (16 out of 16 patents)

11.  Masaki Ihara (15 out of 20 patents)

12.  Toshiaki Mase (15 out of 17 patents)

13.  Koji Yamada (15 out of 15 patents)

14.  Yuji Haga (13 out of 15 patents)

15.  Akane Ishihara (13 out of 13 patents)


Core Competencies:
Aminopyrimidine Derivatives
Benzimidazole Derivatives
PLK1 Inhibitors
Aurora A Inhibitors
Cycloalkanopyridine Derivative
Histamine Receptor Antagonists
Spiro Compounds
Nucleic Acid Encoding
GTP-Binding Proteins
Quinazoline Derivatives
Imidazopyridine Compounds
Obesity Treatments

237 patents:

1. 7977336 - Aminopyrimidine derivatives as PLK1 inhibitors (2011-07-12),
2. 7960402 - Carbamoyl-substituted spiro derivative (2011-06-14),
3. 7960394 - Quinazoline derivative (2011-06-14),
4. 7915263 - Aminopyridine derivatives having aurora A selective inhibitory action (2011-03-29),
5. 7902376 - Process for preparing chiral dipeptidyl peptidase-IV inhibitor intermediates (2011-03-08),
6. 7902369 - Diaryl-substituted five-membered heterocycle derivative (2011-03-08),
7. 7875633 - Phenylpyridone derivative (2011-01-25),
8. 7858800 - Biaryl derivatives (2010-12-28),
9. 7855294 - Cycloalkanopyridine derivative (2010-12-21),
10. 7834182 - Piperidine derivative (2010-11-16),
11. 7834019 - Substituted pyrazolo[3,4-d]pyrimidinone derivatives (2010-11-16),
12. 7834018 - Aminopyridine derivatives having aurora a selective inhibitory action (2010-11-16),
13. 7829586 - Aryl-substituted nitrogen-containing heterocyclic compounds (2010-11-09),
14. 7803807 - Benzimidazole derivatives (2010-09-28),
15. 7799820 - 2-Heterocycle-substituted indole derivatives for treating diabetes and associated conditions (2010-09-21),
Company Overview
Banyu Pharmaceutical Co. Ltd, headquartered in Tokyo, Japan, specializes in the development and manufacturing of innovative pharmaceutical compounds. The company focuses on a range of core technology topics, including aminopyrimidine and benzimidazole derivatives, as well as PLK1 and Aurora A inhibitors. Banyu is also engaged in the research of cycloalkanopyridine derivatives, histamine receptor antagonists, spiro compounds, and nucleic acid encoding, contributing to advancements in therapeutic solutions across various medical fields.
Profile summary synthesized from public USPTO records and patent filings.

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USPTO Data Jan 1 1976 - Nov 10 2026

237 Patents

#314 in Tokyo

#628 in Japan

#3,634 in the World

Tokyo, JP
Tokyo, Japan

Banyu Pharmaceutical Co. Ltd

Forward Citations = 1,277

318 inventors:

goldMedal Akio Kanatani (40 out of 46 patents)

silverMedal Susumu Nakagawa (38 out of 38 patents)

bronzeMedal Takehiro Fukami (32 out of 36 patents)

4.  Ryosuke Ushijima (25 out of 25 patents)

5.  Yoshikazu Iwasawa (23 out of 25 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Banyu Pharmaceutical Co. Ltd. Retrieved from https://idiyas.com/company/banyu-pharmaceutical-company

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

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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