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For the Inventor, By the Inventor

Tokyo, Japan

Oki Electric Industry Co., Ltd.


USPTO Granted Patents = 4,979



Trademarks = 17

Forward Citations = 51,560

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2,908 inventors (with patents filed for the assignee):

goldMedal Hideaki Okayama (62 out of 62 patents)

silverMedal Jiro Tanuma (52 out of 57 patents)

bronzeMedal Katsuhito Watanabe (50 out of 50 patents)

4.  Hiroshi Kikuchi (49 out of 91 patents)

5.  Shinji Ohuchi (43 out of 49 patents)

6.  Minoru Isobe (39 out of 43 patents)

7.  Masashi Takada (36 out of 45 patents)

8.  Satoru Tanoi (36 out of 37 patents)

9.  Hisao Fukushima (36 out of 36 patents)

10.  Hiromi Aoyagi (33 out of 33 patents)

11.  Tomokazu Komazaki (28 out of 33 patents)

12.  Shigeru Yamada (27 out of 45 patents)

13.  Makoto Terui (27 out of 34 patents)

14.  Atsushi Takasugi (26 out of 28 patents)

15.  Yukio Nakamura (25 out of 55 patents)


Core Competencies:
Image Forming Apparatus
Optical Fiber Sensor
Toner Cartridge
Medium Processing Device
Developer Container
Semiconductor Element Unit
Communication Device
Fixation Device
Printing Apparatus
Sound Pick-Up Apparatus
Humidity Detection Device
Integrated Circuit

4,979 patents:

1. 12474650 - Drum unit and image formation apparatus (2025-11-18),
2. 12474648 - Image forming apparatus (2025-11-18),
3. 12429803 - Image formation apparatus including image formation unit that forms glitter developer image (2025-09-30),
4. 12411451 - Image forming apparatus (2025-09-09),
5. 12399443 - Image forming apparatus for printing image using brilliant toner on recording medium (2025-08-26),
6. 12395928 - Communication device, non-transitory computer readable medium, and communication method (2025-08-19),
7. 12379687 - Image formation apparatus with cover member and exposure unit (2025-08-05),
8. 12372921 - Image forming apparatus (2025-07-29),
9. 12332587 - Image formation apparatus, image formation method, and image formation program (2025-06-17),
10. 12332581 - Image formation apparatus having developer cartridge with rotatable shutter lock engagement member (2025-06-17),
11. 12328928 - Semiconductor element unit and method of manufacturing thereof, semiconductor element unit supply substrate, and semiconductor packaging circuit and method of manufacturing thereof (2025-06-10),
12. 12270688 - Optical fiber sensor and Brillouin frequency shift measurement method (2025-04-08),
13. 12242216 - Transfer unit and image forming device (2025-03-04),
14. 12237775 - Power supply device and image formation apparatus (2025-02-25),
15. 12236737 - Medium processing device and cash handling device (2025-02-25),
Oki Electric Industry Co., Ltd. is a Japanese multinational corporation that specializes in manufacturing and selling telecommunication systems, information processing systems, and printers. The company offers a wide range of products and services, including telecommunications equipment, IT solutions, infrastructure systems, and electronic devices. With a history dating back to 1881, Oki Electric Industry has established itself as a leader in the global industry, known for its cutting-edge technology and reliable products.
This text is generated by artificial intelligence and may not be accurate.

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USPTO Data Jan 1 1976 - Dec 16 2025

4,979 Patents

#26 in Tokyo

#49 in Japan

#179 in the World

...
Tokyo, Japan

Oki Electric Industry Co., Ltd.

Forward Citations = 51,560

2,908 inventors:

goldMedal Hideaki Okayama (62 out of 62 patents)

silverMedal Jiro Tanuma (52 out of 57 patents)

bronzeMedal Katsuhito Watanabe (50 out of 50 patents)

4.  Hiroshi Kikuchi (49 out of 91 patents)

5.  Shinji Ohuchi (43 out of 49 patents)

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