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For the Inventor, By the Inventor

Koriyama, Japan

Katsumasa Kuroiwa

This inventor holds 28 USPTO granted patents, primarily in Peptide Chemistry. Top assignees: Nitto Boseki Co., Ltd., Iatron Laboratories Inc., Sagami Chemical Research Center. Active years: 1976-1998.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Katsumasa Kuroiwa. Retrieved from https://idiyas.com/inventor/katsumasa-kuroiwa

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

Calculating rank
USPTO Granted Patents = 28

% Patents Active = 100.0

Average Co-Inventor Count = 3.9

ph-index = 7

Forward Citations = 154(Granted Patents)


Location History:

  • Koriyama, JA (1976)
  • Koriyama, JP (1980 - 1998)

Company Filing History:

goldMedal28 out of 266 
 
Nitto Boseki Co., Ltd.
 patents
silverMedal3 out of 33 
 
Iatron Laboratories Inc.
 patents
bronzeMedal1 out of 191 
 
Sagami Chemical Research Center
 patents
where one patent can have more than one assignee

Years Active: 1976-1998

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Areas of Expertise:
Monoclonal Antibody
Enzyme Activity Assay
Tripeptide Derivatives
Cholinesterase Activity
Kallikrein Measurement
Thrombin Measurement
Peptide Substrates
Protease Inhibitors
Acid Phosphatase
Synthetic Peptides
Arginyl Derivatives
Blood Coagulation
28 patents (USPTO):Explore Patents
1. 5719030 - Monoclonal antibody to prostate-derived acid phosphatase and method for (1998-02-17),
2. 5508385 - Tripeptide derivatives containing pyroglutamic acid residue (1996-04-16),
3. 5416238 - L-argininal acetal derivatives and a process for production thereof (1995-05-16),
4. 5399488 - Method for assaying enzyme activity using N-acetyl-.beta.-D-glucosamine (1995-03-21),
5. 5227291 - Method for determination of acid phosphatase activity using 4-acyl-2, (1993-07-13),
6. 5153176 - Tripeptide derivatives and protease inhibitor composition comprising the (1992-10-06),
7. 5151372 - Method for determination of hydroxyacetophenone derivatives (1992-09-29),
8. 5116941 - Peptide substrates for determination of enzyme activity (1992-05-26),
9. 5115099 - Substrates for determination of enzyme activity and intermediates for (1992-05-19),
10. 5081274 - 4-acyl-2,6-dihalophenyl-phosphoric acid derivatives useful in the (1992-01-14),
11. 5063152 - Synthetic peptidic substrate for determination of trypsin and .alpha..sub.1 (1991-11-05),
12. 4894438 - Synthetic peptidic substrate for determination of trypsin and .alpha..sub.1 (1990-01-16),
13. 4883863 - Tripeptide derivatives and antiplasmin agents containing the same (1989-11-28),
14. 4861713 - Novel method for determining cholinesterase activity (1989-08-29),
15. 4816562 - Novel substrate for plasma kallikrein and a method for measuring (1989-03-28),

Title: Katsumasa Kuroiwa: Pioneering Innovations in Biomedicine

Introduction

Katsumasa Kuroiwa, a distinguished inventor based in Koriyama, Japan, has made significant contributions to the field of biomedicine, with a remarkable portfolio of 28 patents. His innovative work focuses on the development of therapeutic agents and diagnostic tools that address critical health issues.

Latest Patents

Among his most recent patents are two groundbreaking inventions. The first patent centers on a monoclonal antibody to prostate-derived acid phosphatase and method for its determination. This invention allows for the detection of prostate-derived acid phosphatase with exceptional sensitivity, utilizing hybridoma technology to create antibodies that are highly specific for the target enzyme.

The second notable patent involves novel tripeptide derivatives containing a pyroglutamic acid residue. These compounds have been shown to inhibit several trypsin-like serine proteases effectively, including plasmin, thrombin, and urokinase. Such innovative derivatives hold promise as novel protease inhibitors in the treatment of pancreatitis, inflammation, and ulcers.

Career Highlights

Throughout his career, Katsumasa Kuroiwa has held significant positions in reputable companies, contributing to their research and development efforts. Notably, he has worked for Nitto Boseki Co., Ltd. and Iatron Laboratories Inc., where he advanced his expertise in biomedical innovations and collaborations.

Collaborations

Katsumasa has collaborated with esteemed colleagues, including Takeshi Nagasawa and Yoshio Nakamura. Their combined efforts have been pivotal in the successful development of innovative solutions in the biomedical field, fostering advancements that benefit many.

Conclusion

Katsumasa Kuroiwa's fervent dedication to innovation in biomedicine is evident through his extensive patent portfolio and impactful collaborations. His work continues to hold significant potential for advancements in medical diagnostics and therapeutics, paving the way for future discoveries that can enhance patient care and treatment options.

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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