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For the Inventor, By the Inventor

Yokohama, Japan

Ryoichi Koizumi

This inventor holds 20 USPTO granted patents, primarily in Ink Jet Technology. Top assignee: Canon Kabushiki Kaisha. Active years: 1991-2011.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Ryoichi Koizumi. Retrieved from https://idiyas.com/inventor/ryoichi-koizumi

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

USPTO Granted Patents = 20

% Patents Active = 95.0

Average Co-Inventor Count = 3.5

ph-index = 12

Forward Citations = 368(Granted Patents)


Location History:

  • Hiratsuka, JP (1991)
  • Atsugi, JP (1993 - 1998)
  • Yokohama, JP (1991 - 2011)

Company Filing History:

goldMedal20 out of 92,994 
 
Canon Kabushiki Kaisha
 patents

Years Active: 1991-2011

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Areas of Expertise:
Liquid Ejection Head
Temperature Control
Ink Jet Recording
Printing Apparatus
Temperature Sensors
Ink Jet Cartridge
Multilayer Device
Recording Head
Thermal Energy Adjustment
Substrate Technology
Abnormality Detection
Electric Discharge Path
20 patents (USPTO):Explore Patents
1. 7967413 - Liquid ejection head and liquid ejection method (2011-06-28),
2. 6598952 - Liquid jet recording head having controller for controlling temperature distribution (2003-07-29),
3. 6505907 - Recording apparatus having abnormality determination based on temperature and average ejection duty cycle (2003-01-14),
4. 6234599 - Substrate having a built-in temperature detecting element, and ink jet apparatus having the same (2001-05-22),
5. 6074041 - Ink jet recording head having an electric discharge path for releasing (2000-06-13),
6. 5790140 - Printing head, and printer and printing method using the printing head (1998-08-04),
7. 5774147 - Substrate having a common collector region and being usable in a liquid (1998-06-30),
8. 5760797 - Ink jet recording head with adjustable temperature sensor and ink jet (1998-06-02),
9. 5726696 - Ink jet recording head having reserve functional devices (1998-03-10),
10. 5696543 - Recording head which detects temperature of an element chip and corrects (1997-12-09),
11. 5638097 - Recording apparatus to which recording head is detachably mounted (1997-06-10),
12. 5570119 - Multilayer device having integral functional element for use with an ink (1996-10-29),
13. 5491505 - Ink jet recording head and apparatus having a protective member formed (1996-02-13),
14. 5488395 - Liquid jet recording apparatus (1996-01-30),
15. 5485182 - Liquid jet recording apparatus (1996-01-16),

Title: Innovations and Contributions of Ryoichi Koizumi

Introduction: Ryoichi Koizumi, an accomplished inventor based in Yokohama, Japan, has made significant strides in the field of liquid ejection technology. With a remarkable portfolio of 20 patents, his work has greatly influenced the development of advanced recording methods for various applications, particularly in the printing industry.

Latest Patents: Among Koizumi's latest innovations are two noteworthy patents that showcase his expertise. The first patent is for a liquid ejection head and liquid ejection method, which efficiently ejects small-volume droplets from ejection openings. This method allows droplets to combine on the fly into a larger droplet, minimizing the impact of air flows and enhancing printing accuracy by reducing droplet landing position deviations. The second patent involves a liquid jet recording head equipped with a controller for controlling temperature distribution. This technology enables more precise temperature corrections during the recording process to prevent unwanted ejections of liquid, ensuring high-quality outputs.

Career Highlights: Ryoichi Koizumi has dedicated his professional career to Canon Kabushiki Kaisha, where he has played a crucial role in advancing the company's innovations in printing technology. His contributions have positioned Canon as a leader in the competitive landscape of liquid recording technologies.

Collaborations: Throughout his career, Koizumi has collaborated with talented professionals such as Asao Saito and Hiroyuki Ishinaga. These partnerships have fostered a creative environment that encourages innovation and allows for the sharing of ideas, ultimately leading to breakthroughs in their field.

Conclusion: Ryoichi Koizumi's impressive body of work and his commitment to innovation have not only benefitted Canon but also contributed to the broader technological advancements in liquid ejection methods. As he continues to push the boundaries of invention, Koizumi's legacy will likely inspire future generations of inventors and innovators.

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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