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For the Inventor, By the Inventor

Soka, Japan

Takumi Kurokawa

This inventor holds 4 USPTO granted patents and 1 published patent application. Top assignee: Pentel Kabushiki Kaisha. Active years: 1989-1999.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Takumi Kurokawa. Retrieved from https://idiyas.com/inventor/takumi-kurokawa

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

Calculating rank
USPTO Granted Patents = 4 

% Patents Active = 100.0

Average Co-Inventor Count = 1.5

ph-index = 4

Forward Citations = 79(Granted Patents)


Location History:

  • Koshigaya, JP (1989)
  • Soka, JP (1992 - 1993)
  • Kitami, JP (1999)

Company Filing History:

goldMedal4 out of 264 
 
Pentel Kabushiki Kaisha
 patents

Years Active: 1989-1999

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4 patents (USPTO):Explore Patents
1. 5868287 - Liquid dispensing container using pressure of liquid to open disharge (1999-02-09),
2. 5230440 - Granular body discharge container, granular body storage tube and (1993-07-27),
3. 5092702 - Fluid discharge device (1992-03-03),
4. 4867593 - Liquid dispenser with valve mechanism and flexible container (1989-09-19),

Title: Takumi Kurokawa: Innovator in Liquid Dispensing Technology

Introduction

Takumi Kurokawa is a notable inventor based in Soka, Japan. He has made significant contributions to the field of liquid dispensing technology. With a total of 4 patents to his name, Kurokawa has demonstrated his innovative spirit and technical expertise.

Latest Patents

Among his latest patents are several groundbreaking inventions. These include a liquid dispensing container that utilizes the pressure of the liquid to open the discharge. Additionally, he has developed a granular body discharge container and a granular body storage tube. These inventions showcase his ability to create practical solutions for everyday challenges.

Career Highlights

Kurokawa is currently employed at Pentel Kabushiki Kaisha, a company known for its innovative writing instruments and office supplies. His work at Pentel has allowed him to further explore his passion for invention and contribute to the company's product development.

Collaborations

Throughout his career, Kurokawa has collaborated with talented individuals such as Hideyuki Usami and Kenichi Kumamoto. These partnerships have enriched his work and led to the development of innovative products.

Conclusion

Takumi Kurokawa is a distinguished inventor whose work in liquid dispensing technology has made a significant impact. His patents reflect his commitment to innovation and problem-solving. Kurokawa's contributions continue to influence the industry and inspire future 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]
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