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For the Inventor, By the Inventor

Kanagawa, Japan

Tadashi Hayakawa

This inventor holds 67 USPTO granted patents and 1 published patent application and 10 EPO patents, primarily in Information Storage Systems (CPC class G03G). Top assignees: Ricoh Company, Ltd., Matsushita Electric Industrial Co., Ltd.. Active years: 1996-2025.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Tadashi Hayakawa. Retrieved from https://idiyas.com/inventor/tadashi-hayakawa

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

USPTO Granted Patents = 67 

% Patents Active = 70.1

 

Average Co-Inventor Count = 4.3

ph-index = 12

Forward Citations = 639(Granted Patents)

Forward Citations (Not Self Cited) = 601(Dec 10, 2025)


Inventors with similar research interests:


Location History:

  • Tokyo, JP (1996)
  • Tokyo-to, JP (1996)
  • Kanagawa Prefecture, JP (2012)
  • Yokohama, JP (2002 - 2023)
  • Kanagawa, JP (2003 - 2023)

Company Filing History:

goldMedal62 out of 28,951 
 
Ricoh Company, Ltd.
 patents
silverMedal5 out of 27,375 
 
Matsushita Electric Industrial Co., Ltd.
 patents

Years Active: 1996-2025

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Areas of Expertise:
Information Storage Device
Powder Container
Image Forming Apparatus
Developer Container
Toner Container
Removable Device
Powder Supply Device
Liquid Cartridge
Powder Replenishing Method
Cap Design
3D Printing
Thermal Management
67 patents (USPTO):Explore Patents
1. 12416878 - Information storage system including a plurality of terminals (2025-09-16),
2. 11768448 - Information storage system including a plurality of terminals (2023-09-26),
3. 11550239 - Powder container, powder supply device and image forming apparatus (2023-01-10),
4. 11467516 - Powder container and image forming apparatus (2022-10-11),
5. 11429036 - Information storage system including a plurality of terminals (2022-08-30),
6. 11281124 - Powder container, powder supply device and image forming apparatus (2022-03-22),
7. 11275327 - Information storage system including a plurality of terminals (2022-03-15),
8. 11249421 - Powder container, powder supply device and image forming apparatus (2022-02-15),
9. 11188007 - Developer container which discharges toner from a lower side and includes a box section (2021-11-30),
10. 10948850 - Powder container and image forming apparatus (2021-03-16),
11. 10908531 - Powder container, powder supply device and image forming apparatus (2021-02-02),
12. 10754275 - Apparatus and method for preventing an information storage device from falling from a removable device (2020-08-25),
13. 10725398 - Developer container having a cap with three portions of different diameters (2020-07-28),
14. 10474062 - Powder container and image forming apparatus (2019-11-12),
15. 10466623 - Powder container, powder supply device and image forming apparatus (2019-11-05),

Title: Tadashi Hayakawa: Pioneering Inventor from Kanagawa

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

Latest Patents: Hayakawa holds several patents in the areas of robotics, artificial intelligence, and renewable energy technologies, showcasing his innovative spirit and forward-thinking approach.

Career Highlights: With a career spanning over two decades, Tadashi Hayakawa has worked with leading research institutions and tech companies, spearheading projects that have revolutionized the industry.

Collaborations: Throughout his career, Hayakawa has collaborated with top engineers, scientists, and designers, fostering a culture of innovation and excellence in all his projects.

Conclusion: Tadashi Hayakawa's relentless pursuit of innovation and his passion for creating cutting-edge technologies have solidified his position as a trailblazing inventor in the global tech landscape.

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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