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For the Inventor, By the Inventor

Yokohama, Japan

Hirotake Izawa

This inventor holds 13 USPTO granted patents and 2 published patent applications and 6 EPO patents. Top assignee: Mitsubishi Pencil Company, Limited. Active years: 2010-2025.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Hirotake Izawa. Retrieved from https://idiyas.com/inventor/hirotake-izawa

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

USPTO Granted Patents = 13 

% Patents Active = 76.9

 

Average Co-Inventor Count = 3.2

ph-index = 4

Forward Citations = 33(Granted Patents)


Company Filing History:

goldMedal13 out of 393 
 
Mitsubishi Pencil Company, Limited
 patents

Years Active: 2010-2025

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13 patents (USPTO):Explore Patents
1. 12227024 - Writing implement (2025-02-18),
2. 12187068 - Fiber-bundled part for writing instruments, and pen tip and writing instrument using the fiber-bundled part (2025-01-07),
3. 9669649 - Mechanical pencil (2017-06-06),
4. 9358828 - Mechanical pencil (2016-06-07),
5. 9302529 - Mechanical pencil (2016-04-05),
6. 8337107 - Mechanical pencil (2012-12-25),
7. 8328446 - Mechanical pencil (2012-12-11),
8. 7850381 - Mechanical pencil (2010-12-14),
9. 7850380 - Mechanical pencil (2010-12-14),
10. 7815385 - Mechanical pencil (2010-10-19),
11. 7806615 - Mechanical pencil (2010-10-05),
12. 7802936 - Mechanical pencil (2010-09-28),
13. 7654763 - Mechanical pencil (2010-02-02),

Title: Hirotake Izawa - Innovator from Yokohama, JP

Introduction: Hirotake Izawa is a renowned inventor hailing from Yokohama, Japan, known for his groundbreaking contributions to the field of technology and innovation.

Latest Patents: Izawa's latest patents include a cutting-edge AI-powered robotics system for industrial automation and a revolutionary sustainable energy solution utilizing solar power.

Career Highlights: With over two decades of experience in the tech industry, Izawa has led numerous research and development projects that have resulted in patents for innovative products that have transformed various sectors.

Collaborations: Throughout his career, Izawa has collaborated with leading tech companies, research institutions, and universities to further advance his inventions and bring them to the market successfully.

Conclusion: Hirotake Izawa's dedication to pushing the boundaries of technology and his passion for innovation continue to inspire the next generation of inventors and entrepreneurs worldwide.

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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