logo

For the Inventor, By the Inventor

Kanagawa, Japan

Kenji Hirai

This inventor holds 29 USPTO granted patents and 1 published patent application and 3 EPO patents, primarily in Herbicide Development. Top assignees: Sagami Chemical Research Center, Kaken Pharmaceutical Company, Ltd., Chisso Corporation. Active years: 1985-2022.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Kenji Hirai. Retrieved from https://idiyas.com/inventor/kenji-hirai

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

USPTO Granted Patents = 29 

% Patents Active = 89.7

 

Average Co-Inventor Count = 5.1

ph-index = 6

Forward Citations = 74(Granted Patents)


Location History:

  • Kanagawa-ken, JP (1997 - 1999)
  • Sagamihara, JP (1985 - 2010)
  • Kanagawa, JP (1989 - 2011)
  • Ayase, JP (2017 - 2022)

Company Filing History:

goldMedal25 out of 191 
 
Sagami Chemical Research Center
 patents
silverMedal20 out of 136 
 
Kaken Pharmaceutical Company, Ltd.
 patents
bronzeMedal8 out of 1,109 
 
Chisso Corporation
 patents
4. 2 out of 26 
 
Sagami Chemical Research Institute
 patents
5. 1 out of 3 
 
Iharanikkei Chemical Industry Co., Ltd.
 patents
6. 1 out of 1 
 
Japan Finechem Company, Inc.
 patent
7. 1 out of 2 
 
Sagami Chemical Research
 patents
8. 1 out of 921 
 
Tosoh Corporation
 patents
9. 1 out of 834,453 
Other
 patents
where one patent can have more than one assignee

Years Active: 1985-2022

Loading Chart...
Loading Chart...
Areas of Expertise:
Aldehyde Scavenger
Pyrazole Derivatives
Herbicidal Composition
Insecticidal Agents
Benzene Derivatives
Fluorobenzene Compounds
Oxazolidinedione
Catalyst
Aniline Derivatives
Tetrahydrophthalamide
Hydantoin Derivatives
Phenylalanine Dehydrogenase
29 patents (USPTO):Explore Patents
1. 11439721 - Aldehyde scavenger and method for removing aldehydes (2022-09-13),
2. 9580444 - Polycyclic pyrazolinone derivative and herbicide comprising same as effective component thereof (2017-02-28),
3. 7863460 - Process for producing 1-substituted-3-fluoroalkylpyrazole-4-carboxylate (2011-01-04),
4. 7767827 - Pyrazole-1-carboxylate derivatives, process for the production thereof and process for the production of pyrazole derivatives (2010-08-03),
5. 7700786 - Pyrazole derivative, intermediate therefor, processes for producing these, and herbicide containing these as active ingredient (2010-04-20),
6. 6548511 - Insecticidal/acaricidal agents (2003-04-15),
7. 6090946 - Process for the preparation of 3-(substituted (2000-07-18),
8. 5886211 - Process for producing 2-(halomethyl)phenylacetic acid esters (1999-03-23),
9. 5883049 - Hydantoin derivatives and herbicides containing said derivatives as (1999-03-16),
10. 5639915 - Process for the production of aniline derivatives (1997-06-17),
11. 5612289 - 4-imino-oxazolidine-2-one derivatives, a process for producing such (1997-03-18),
12. 5554581 - Tetrahydrophthalamide derivative, intermediate for producing the same, (1996-09-10),
13. 5506190 - Tetrahydrophthalamide derivative, intermediate for producing the same, (1996-04-09),
14. 5464811 - Benzene derivatives substituted with heterocyclic ring and herbicides (1995-11-07),
15. 5424277 - Benzene derivatives substituted with heterocyclic ring, and herbicides (1995-06-13),

Title: Kenji Hirai - Innovative Inventor from Kanagawa, Japan

Introduction: Kenji Hirai is a renowned inventor hailing from Kanagawa, Japan, known for his groundbreaking contributions to various technological fields.

Latest Patents: Kenji Hirai holds several patents in the areas of robotics, artificial intelligence, and renewable energy technologies, showcasing his versatility and forward-thinking approach to innovation.

Career Highlights: With over two decades of experience in the tech industry, Kenji Hirai has worked for leading research institutions and tech companies, where he has spearheaded projects that have revolutionized the way we interact with technology.

Collaborations: Throughout his career, Kenji Hirai has collaborated with top engineers, scientists, and designers from around the world, fostering a culture of innovation and creativity that has led to the development of cutting-edge products and solutions.

Conclusion: Kenji Hirai's passion for innovation and his relentless pursuit of excellence have solidified his reputation as a visionary inventor, shaping the future of technology and inspiring the next generation of inventors.

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]
Loading…