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Riso Kagaku Corporation

USPTO Granted Patents = 1,074

EPO Patents = 124

Trademarks = 28

Forward Citations = 3,840

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595 inventors (with patents filed for the assignee):

Takanori Hasegawa (38 out of 38 patents)

Sadanao Okuda (29 out of 29 patents)

Shinichiro Shimura (23 out of 23 patents)

4. Hiroshi Sugitani (23 out of 23 patents)

5. Yoshiyuki Okada (23 out of 24 patents)

6. Masashi Hara (23 out of 24 patents)

7. Yoshikazu Hara (23 out of 24 patents)

8. Toshihiro Endo (22 out of 22 patents)

9. Yoshifumi Watanabe (21 out of 21 patents)

10. Hideo Watanabe (21 out of 81 patents)

11. Yasuhiro Takahashi (19 out of 82 patents)

12. Kazuyuki Ando (19 out of 19 patents)

13. Katsuro Motoe (19 out of 20 patents)

14. Jun Nakamura (17 out of 33 patents)

15. Akiko Hayashi (16 out of 16 patents)

Core Competencies:

Information Processing Apparatus

Wireless Communication Tag

Video Information Processing

Inkjet Printer

Liquid Supply Apparatus

Transfer Medium Production

Oil-Based Inkjet Ink

Sheet Feeding Device

Screen Printing Treatment

Image Inspection Apparatus

Medium Ejection Apparatus

Conveying Apparatus

1,074 patents: Sort by Forward Citations

1. 12456228 - Information processing apparatus, information processing method, and non-transitory computer-readable storage medium storing information processing program (2025-10-28),

2. D1096705 - Wireless communication tag (2025-10-07),

3. 12437545 - Method, apparatus, and program for processing video information (2025-10-07),

4. 12423640 - Delivery item information management system, method, apparatus, and program for managing delivery item information, and printing apparatus (2025-09-23),

5. 12397543 - Inkjet printer (2025-08-26),

6. 12311673 - Liquid supply apparatus (2025-05-27),

7. 12291035 - Inkjet printer, flow path resistance adjustment method, and printing method (2025-05-06),

8. 12263686 - Electronic apparatus (2025-04-01),

9. 12246939 - Medium feeding device (2025-03-11),

10. 12227899 - Method for producing printed textile item (2025-02-18),

11. 12195632 - Oil-based inkjet ink (2025-01-14),

12. 12194767 - Method for producing transfer sheet, and aqueous adhesive liquid (2025-01-14),

13. 12194725 - Method and apparatus for producing transfer medium (2025-01-14),

14. 12187566 - Conveying apparatus (2025-01-07),

15. 12128676 - Printing apparatus (2024-10-29),

RISO KAGAKU CORPORATION is a Japanese company that specializes in the development, manufacturing, and distribution of printing equipment and related solutions. With a focus on high-speed inkjet printers, digital duplicators, and related consumables, RISO KAGAKU provides innovative and cost-effective printing solutions to businesses and institutions worldwide.

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

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USPTO Data Jan 1 1976 - Dec 9 2025

1,074 Patents

#97 in Tokyo

#208 in Japan

#921 in the World

Riso Kagaku Corporation

Forward Citations = 3,840

595 inventors:

Takanori Hasegawa (38 out of 38 patents)

Sadanao Okuda (29 out of 29 patents)

Shinichiro Shimura (23 out of 23 patents)

4. Hiroshi Sugitani (23 out of 23 patents)

5. Yoshiyuki Okada (23 out of 24 patents)

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