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For the Inventor, By the Inventor

Yokohama, Japan

Keiji Tomizawa

This inventor holds 62 USPTO granted patents and 14 published patent applications and 5 EPO patents, primarily in Liquid Ejection Technology (CPC class B41J). Top assignee: Canon Kabushiki Kaisha. Active years: 2004-2026.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Keiji Tomizawa. Retrieved from https://idiyas.com/inventor/keiji-tomizawa

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

USPTO Granted Patents = 62 

% Patents Active = 56.5

 

Average Co-Inventor Count = 3.5

ph-index = 8

Forward Citations = 258(Granted Patents)

Forward Citations (Not Self Cited) = 168(Dec 10, 2025)


Inventors with similar research interests:


Location History:

  • Yokohama, JP (2009 - 2021)
  • Kanagawa, JP (2004 - 2024)

Company Filing History:

goldMedal62 out of 92,994 
 
Canon Kabushiki Kaisha
 patents

Years Active: 2004-2026

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Areas of Expertise:
Liquid Ejection
Print Head
Inkjet Printing
Liquid Discharge Head
Ejecting Element
Control Method
Manufacturing Method
Printing Apparatus
Recording Element
Ejection Control
Chip Production
Aging Method
62 patents (USPTO):Explore Patents
1. 12722381 - Liquid ejection apparatus and method of controlling the same (2026-09-01),
2. 12703186 - Liquid ejection head (2026-08-11),
3. 12629944 - Liquid ejection head and liquid ejection apparatus (2026-05-19),
4. 12600125 - Liquid ejection apparatus and liquid ejection control method (2026-04-14),
5. 12576643 - Liquid ejection apparatus, method for controlling liquid ejection apparatus, and storage medium (2026-03-17),
6. 12576636 - Liquid discharge head (2026-03-17),
7. 12145359 - Liquid ejection apparatus and control method (2024-11-19),
8. 12053979 - Liquid ejection apparatus and control method (2024-08-06),
9. 12023924 - Liquid ejection apparatus and control method (2024-07-02),
10. 11712891 - Liquid ejection head and liquid ejection apparatus (2023-08-01),
11. 11597203 - Liquid ejection head including a plurality of recording element substrates formed adjacent to each other to form an array such that a gap in temperature distribution is prevented (2023-03-07),
12. 11077658 - Liquid ejection head and method of manufacturing the same (2021-08-03),
13. 10322578 - Liquid ejection head and liquid ejection apparatus (2019-06-18),
14. 10308018 - Printing apparatus and method of controlling printhead (2019-06-04),
15. 10300698 - Liquid ejection head (2019-05-28),

**Title: The Innovative Journey of Keiji Tomizawa**

Introduction: Keiji Tomizawa, a visionary inventor hailing from Yokohama, Japan, has made significant contributions to the world of technology and innovation.

Latest Patents: Keiji Tomizawa holds several groundbreaking patents in the field of robotics and artificial intelligence, showcasing his commitment to pushing the boundaries of technological advancement.

Career Highlights: With a career spanning over two decades, Keiji Tomizawa has worked tirelessly to develop cutting-edge solutions that have revolutionized industries such as automation, healthcare, and transportation.

Collaborations: Throughout his career, Keiji Tomizawa has collaborated with leading research institutions, universities, and tech companies to bring his innovative ideas to life. His collaborative spirit has led to the creation of groundbreaking technologies that have had a lasting impact on society.

Conclusion: Keiji Tomizawa's passion for innovation and his relentless pursuit of excellence have solidified his position as a trailblazer in the world of technology. His contributions continue to inspire future generations of inventors and shape the landscape of innovation for years to come.

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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