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For the Inventor, By the Inventor

Machida, Japan

Kunikatsu Shirahata

This inventor holds 36 USPTO granted patents, primarily in Pharmaceutical Compounds. Top assignees: Kyowa Hakko Kogyo Co., Ltd., Kyowa Hakko Kogyo Kabushiki Kaisha, Abbott Laboratories Corporation. Active years: 1977-1990.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Kunikatsu Shirahata. Retrieved from https://idiyas.com/inventor/kunikatsu-shirahata

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

USPTO Granted Patents = 36

% Patents Active = 100.0

Average Co-Inventor Count = 5.0

ph-index = 6

Forward Citations = 181(Granted Patents)


Location History:

  • Columbus, OH (US) (1977 - 1980)
  • Machida, JP (1979 - 1986)
  • Tokyo, JP (1986 - 1988)
  • Komae, JP (1985 - 1990)

Company Filing History:

goldMedal20 out of 730 
 
Kyowa Hakko Kogyo Co., Ltd.
 patents
silverMedal8 out of 45 
 
Kyowa Hakko Kogyo Kabushiki Kaisha
 patents
bronzeMedal7 out of 4,189 
 
Abbott Laboratories Corporation
 patents
4. 2 out of 12 
 
Kitasato Kenkyusho
 patents
5. 1 out of 1 
 
Kyowa Hakko Kogyo Kabushiki
 patent
where one patent can have more than one assignee

Years Active: 1977-1990

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Areas of Expertise:
Pharmaceuticals
Mitomycin Derivatives
Antibiotics
Growth Hormones
Physiologically Active Substances
Antitumor Compounds
Processes for Production
Novel Substances
Eel Growth Hormone
Fish Growth Hormone
Fortimicin Factors
36 patents (USPTO):Explore Patents
1. 4962125 - Novel substance KS-619-1, preparation process and pharmaceutical (1990-10-09),
2. 4894362 - Eel growth hormone (1990-01-16),
3. 4853385 - 7-N,8-N-Ethylenemitomycin 8-imines (1989-08-01),
4. 4771068 - Mitomycin derivatives having anti-tumor and antibacterial utility (1988-09-13),
5. 4748251 - 7-n-aminomethylenemitomycin derivative (1988-05-31),
6. 4733000 - Optially active 1-amino-2-(4-hydroxyphenyl)ethylphosphonic acid and (1988-03-22),
7. 4692310 - Substance K-259-2 and a process for producing the same (1987-09-08),
8. 4691024 - New mitomycin derivatives, preparation thereof and pharmaceutical (1987-09-01),
9. 4683220 - Novel physiologically active substances K-26, a process for preparation (1987-07-28),
10. 4645755 - Fish growth hormone (1987-02-24),
11. 4623722 - Fortimicin factor KG.sub.3 (1986-11-18),
12. 4618613 - Preventive and healing composition for diseases due to lipoxygenase (1986-10-21),
13. 4563462 - Substance AX-2, a process for producing the same and an antitumor (1986-01-07),
14. 4555402 - Physiologically active substance K-252, process for producing same and (1985-11-26),
15. 4522812 - Novel physiologically active substance K-4, a process for preparation (1985-06-11),

Title: The Innovations of Kunikatsu Shirahata: Pioneering Patents in Pharmaceutical and Aquaculture Fields

Introduction: Kunikatsu Shirahata, an esteemed inventor based in Machida, Japan, holds an impressive portfolio of 36 patents. His groundbreaking work has significantly contributed to the fields of pharmaceuticals and aquaculture, showcasing his expertise and innovative approach in addressing complex biological challenges.

Latest Patents: Among his latest inventions is a patent for a novel substance known as KS-619-1. This physiologically active substance exhibits vasodilative activity and is produced through the culturing of Streptomyces californicus ATCC 3312. Another notable patent focuses on the extraction of an eel growth hormone, isolated from the organ culture broth of the pituitary gland of eels. This invention also involves the creation of a recombinant DNA capable of expressing the eel growth hormone polypeptide, which can be utilized for the mass production of this vital growth hormone.

Career Highlights: Kunikatsu Shirahata has made his mark in the industry by working with prominent companies, notably Kyowa Hakko Kogyo Co., Ltd. and Kyowa Hakko Kogyo Kabushiki Kaisha. His contributions in these organizations have further bolstered his reputation as an influential inventor in his fields.

Collaborations: Throughout his career, Shirahata has collaborated with notable colleagues, including Masaji Kasai and Takao Iida. These partnerships have played an essential role in the development of his patented technologies and innovative solutions, facilitating his continued success as an inventor.

Conclusion: Kunikatsu Shirahata is a testament to innovation in both pharmaceuticals and aquaculture. His extensive number of patents and collaborative work demonstrate his commitment to advancing scientific knowledge and enhancing product development. As he continues to innovate, Shirahata undoubtedly remains a significant figure in the realm of invention.

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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