For the Inventor, By the Inventor

Enter assignee name

Ricoh Printing Systems, Ltd.

USPTO Granted Patents = 129

% Expired Patents = 66.7

EPO Patents = 1

Forward Citations = 520

Loading Chart...

Loading Chart...

194 inventors (with patents filed for the assignee):

Takahiro Yamada (17 out of 62 patents)

Hitoshi Kida (16 out of 58 patents)

Shinya Kobayashi (12 out of 75 patents)

4. Satoru Tobita (10 out of 35 patents)

5. Tomohiko Koda (9 out of 16 patents)

6. Toshio Ogiso (8 out of 28 patents)

7. Chikara Hiraoka (7 out of 24 patents)

8. Takeshi Mochizuki (7 out of 39 patents)

9. Toru Hanashima (7 out of 12 patents)

10. Osamu Machida (7 out of 20 patents)

11. Kenji Asuwa (7 out of 13 patents)

12. Shintaro Yamada (6 out of 28 patents)

13. Shigenori Yaguchi (6 out of 37 patents)

14. Teruaki Mitsuya (6 out of 50 patents)

15. Kazuo Shimizu (6 out of 26 patents)

Core Competencies:

Inkjet Head

Liquid Ejection

Image Forming

Droplet Ejection

Electrophotographic Toner

Optical Scanner

Sheet Feeding

Color Printing

Thin Film Formation

Cleaning Device

Multi-Beam Technology

Inkjet Recording

129 patents: Sort by Forward Citations

1. 8351826 - Image forming method, image forming device, and image forming program (2013-01-08),

2. 8087761 - Liquid discharging head, method of manufacturing liquid discharging head, and image forming apparatus (2012-01-03),

3. 8003160 - Wiring substrate (2011-08-23),

4. 7914126 - Ink jet head manufacturing device, ink jet head manufacturing method, and ink jet device (2011-03-29),

5. 7887151 - Method for adjusting uniformity of liquid ejection from a liquid ejection head (2011-02-15),

6. 7745307 - Method of manufacturing an inkjet head through the anodic bonding of silicon members (2010-06-29),

7. 7744197 - Method for manufacturing inkjet recording head of inkjet recording device (2010-06-29),

8. 7695114 - Inkjet head and method of producing the same (2010-04-13),

9. 7681987 - Inkjet recording head (2010-03-23),

10. 7654652 - Ink jet head (2010-02-02),

11. 7651203 - Inkjet recording device, ejecting device provided therein, and method of calibrating ejection characteristic for droplet (2010-01-26),

12. 7651197 - Method of manufacturing an inkjet head through the anodic bonding of silicon members (2010-01-26),

13. 7648734 - Apparatus for forming thin film and method for forming the same (2010-01-19),

14. 7604311 - Droplet ejection device and droplet ejection method (2009-10-20),

15. 7588244 - Sheet feeder with optical sensor (2009-09-15),

Ricoh Printing Systems, Ltd., based in Tokyo, specializes in advanced inkjet technology, focusing on the development and manufacturing of innovative printing solutions. The company is renowned for its expertise in inkjet heads, liquid ejection systems, and image forming technologies, which are integral to modern printing applications. Additionally, Ricoh engages in research related to droplet ejection, electrophotographic toner, optical scanning, and color printing, positioning itself as a key player in the global printing industry.

Profile summary based on public USPTO records.

Company Badge

USPTO Data Jan 1 1976 - Oct 6 2026

129 Patents

#468 in Tokyo

#953 in Japan

#6,214 in the World

Ricoh Printing Systems, Ltd.

Forward Citations = 520

194 inventors:

Takahiro Yamada (17 out of 62 patents)

Hitoshi Kida (16 out of 58 patents)

Shinya Kobayashi (12 out of 75 patents)

4. Satoru Tobita (10 out of 35 patents)

5. Tomohiko Koda (9 out of 16 patents)

Please report any incorrect information to [email protected]

Loading…