For the Inventor, By the Inventor

Enter assignee name

Oki Data Corporation

USPTO Granted Patents = 1,875

% Expired Patents = 50.9

EPO Patents = 180

Trademarks = 2

Forward Citations = 6,030

Loading Chart...

Loading Chart...

641 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 44 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 116 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:

Image Forming Apparatus

Toner Cartridge

Printing System

Image Processing

Developer Container

Fixing Device

Medium Conveying

Image Formation Method

Fuser Device

Charging Device

Inkjet Printer

Exposure Device

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),

Company Overview

Oki Data Corporation, headquartered in Tokyo, specializes in image formation technology, focusing on the development and manufacturing of advanced printing solutions. The company is known for its innovative image forming apparatus, toner cartridges, and comprehensive printing systems that enhance productivity and efficiency in various applications. Oki Data also emphasizes image processing technologies, including developer containers and fixing devices, contributing to the evolution of modern printing methodologies and medium conveying techniques.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 13 2026

1,875 Patents

#69 in Tokyo

#127 in Japan

#534 in the World

Oki Data Corporation

Forward Citations = 6,030

641 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 44 patents)

5. Akihiro Yamamura (34 out of 60 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Oki Data Corporation. Retrieved from https://idiyas.com/company/oki-data

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

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]

Loading…