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Oki Data Corporation

USPTO Granted Patents = 1,875

EPO Patents = 181

Trademarks = 9

Forward Citations = 5,954

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685 inventors (with patents filed for the assignee):

Mitsuhiko Ogihara (67 out of 96 patents)

Akira Nagumo (52 out of 61 patents)

Hiroyuki Fujiwara (44 out of 54 patents)

4. Takahito Suzuki (35 out of 41 patents)

5. Akihiro Yamamura (34 out of 60 patents)

6. Yukiyoshi Oda (32 out of 32 patents)

7. Makoto Kitamura (24 out of 79 patents)

8. Toshiki Sato (23 out of 28 patents)

9. Tetsu Koyama (23 out of 32 patents)

10. Ken Nozawa (22 out of 22 patents)

11. Takashi Kobayashi (20 out of 115 patents)

12. Shigenori Koido (20 out of 20 patents)

13. Tatsuhiko Shimomura (20 out of 23 patents)

14. Shinichi Otani (20 out of 23 patents)

15. Masumi Taninaka (20 out of 42 patents)

Core Competencies:

Inkjet Printers

Image Forming Apparatus

Toner Cartridges

Print Control Devices

Developing Agent Containers

Fuser Devices

Image Formation Methods

Medium Winding Devices

Charging Devices

Optical Print Heads

Environmental Control Systems

Belt Units

1,875 patents: Sort by Forward Citations

1. 11065877 - Drying device and inkjet printer therewith (2021-07-20),

2. 11061355 - Image forming apparatus (2021-07-13),

3. 11054785 - Image forming apparatus (2021-07-06),

4. 11048451 - Image forming device having additional operation mode for additional module (2021-06-29),

5. 11048196 - Image formation apparatus (2021-06-29),

6. 11042112 - Image formation apparatus (2021-06-22),

7. 10991849 - Light-emitting thyristor, light-emitting element chip, optical print head, and image forming apparatus (2021-04-27),

8. 10990331 - Print control device, non-transitory computer-readable medium, and print control method (2021-04-27),

9. 10988331 - Medium containing device and image forming apparatus (2021-04-27),

10. D916958 - Image drum cartridge (2021-04-20),

11. 10983470 - Image forming apparatus (2021-04-20),

12. 10983455 - Image forming apparatus performing return control using environmental history information (2021-04-20),

13. 10976700 - Image forming apparatus (2021-04-13),

14. 10976687 - Developing agent container with movable shutter for closing developing agent supply hole (2021-04-13),

15. 10974503 - Recording apparatus and correction method (2021-04-13),

OKI DATA CORPORATION is a global manufacturer and provider of high-quality printers and multifunctional products for businesses. With a history of over 130 years, the company focuses on delivering innovative printing solutions that optimize efficiency, productivity, and cost-effectiveness. OKI's product portfolio includes laser printers, inkjet printers, dot matrix printers, and wide-format printers. They also offer a range of reliable and durable printer supplies and accessories. OKI DATA CORPORATION is committed to meeting the printing needs of various industries and providing excellent customer support.

This text is generated by artificial intelligence and may not be accurate.

Company Badge

USPTO Data Jan 1 1976 - Dec 9 2025

1,875 Patents

#60 in Tokyo

#123 in Japan

#519 in the World

Oki Data Corporation

Forward Citations = 5,954

685 inventors:

Mitsuhiko Ogihara (67 out of 96 patents)

Akira Nagumo (52 out of 61 patents)

Hiroyuki Fujiwara (44 out of 54 patents)

4. Takahito Suzuki (35 out of 41 patents)

5. Akihiro Yamamura (34 out of 60 patents)

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