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For the Inventor, By the Inventor

Nagoya, Japan

Keita Shimizu

This inventor holds 80 USPTO granted patents and 5 published patent applications and 20 EPO patents, primarily in Image Forming Apparatus (CPC class G03G). Top assignees: Brother Kogyo Kabushiki-Kaisha, Brother Industries, Ltd.. Active years: 2015-2026.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Keita Shimizu. Retrieved from https://idiyas.com/inventor/keita-shimizu

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

USPTO Granted Patents = 80 

% Patents Active = 97.5

 

Average Co-Inventor Count = 2.1

ph-index = 7

Forward Citations = 120(Granted Patents)

Forward Citations (Not Self Cited) = 92(Dec 10, 2025)


Inventors with similar research interests:


Location History:

  • Tsushima, JP (2015 - 2018)
  • Nagoya, JP (2017 - 2024)

Company Filing History:

goldMedal73 out of 17,897 
 
Brother Kogyo Kabushiki-Kaisha
 patents
silverMedal7 out of 999 
 
Brother Industries, Ltd.
 patents

Years Active: 2015-2026

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Areas of Expertise:
Toner Cartridge
Developing Cartridge
Image Forming Apparatus
Photosensitive Drum
Electrical Contacts
Memory Holder
Drum Unit
Coupling and Clutch
Waste Toner Accumulating
Detection Gear
Engagement Portions
Drive Gear
80 patents (USPTO):Explore Patents
1. 12704800 - Developing cartridge including electrical contact surface positioned away from developing roller (2026-08-11),
2. 12619174 - Toner cartridge attachable to image forming apparatus (2026-05-05),
3. 12607959 - Toner cartridge including memory holder cover having pawl engaged with hook of gear cover (2026-04-21),
4. 12566401 - Image forming apparatus having process cartridge with electrical contacts and memory contact facing outward (2026-03-03),
5. 12529989 - Drum unit including drum frame to which developing cartridge is attachable, lever configured to contact portion of developing cartridge, and urging member urging lever (2026-01-20),
6. D1098260 - Toner cartridge (2025-10-14),
7. D1093475 - Photosensitive drum unit (2025-09-16),
8. 12360493 - Developing cartridge (2025-07-15),
9. 12282270 - Developer cartridge provided with gear having engagement portions (2025-04-21),
10. 12271145 - Image forming apparatus (2025-04-08),
11. 12204275 - Developing cartridge providing layout of electrodes and detection gear (2025-01-21),
12. 12174560 - Toner cartridge and drum cartridge (2024-12-24),
13. 12164263 - Toner cartridge including memory holder cover having pawl engaged with hook of gear cover (2024-12-10),
14. 12140882 - Developing cartridge including electrical contact surface positioned away from developing roller (2024-11-12),
15. 12092974 - Toner cartridge attachable to image forming apparatus (2024-09-17),

Title: The Innovative Mind of Keita Shimizu

Introduction:

Keita Shimizu, a visionary inventor hailing from Nagoya, Japan, is renowned for his groundbreaking contributions to the field of technology and innovation.

Latest Patents:

Keita Shimizu's latest patents include cutting-edge advancements in robotics, artificial intelligence, and sustainable energy solutions, solidifying his position as a pioneer in the industry.

Career Highlights:

With a career spanning over two decades, Keita Shimizu has consistently pushed the boundaries of what is possible, with a focus on creating solutions that positively impact society. His work has been recognized globally for its ingenuity and practicality.

Collaborations:

Throughout his career, Keita Shimizu has collaborated with leading research institutions, universities, and tech companies to bring his ideas to life. His ability to work seamlessly in multidisciplinary teams has led to the development of innovative products that have revolutionized the tech landscape.

Conclusion:

In conclusion, Keita Shimizu's relentless pursuit of innovation and his passion for creating a better future through technology make him a true trailblazer in the world of inventions. His work continues to inspire generations of inventors to think boldly and push the limits of what is possible.

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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