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For the Inventor, By the Inventor

Saitama, Japan

Riken Corporation


USPTO Granted Patents = 887

% Expired Patents = 45.7



Forward Citations = 3,006

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1,648 inventors (with patents filed for the assignee):

goldMedal Hideki Hirayama (44 out of 46 patents)

silverMedal Shigeyuki Yokoyama (44 out of 54 patents)

bronzeMedal Yoshiki Sasai (37 out of 37 patents)

4.  Atsushi Miyawaki (36 out of 44 patents)

5.  Satoshi Wada (20 out of 33 patents)

6.  Hideo Yokota (19 out of 20 patents)

7.  Kiwamu Kase (19 out of 21 patents)

8.  Zhaomin Hou (18 out of 18 patents)

9.  Hitoshi Ohmori (18 out of 34 patents)

10.  Hiroyuki Osada (17 out of 22 patents)

11.  Yoshihide Hayashizaki (17 out of 54 patents)

12.  Masayo Takahashi (16 out of 19 patents)

13.  Yoshinori Tokura (16 out of 36 patents)

14.  Satoshi Karasawa (16 out of 25 patents)

15.  Masaru Taniguchi (15 out of 22 patents)


Core Competencies:
Retinal Tissue
Ophthalmic Devices
Infection Prevention
Stem Cells
Pharmaceutical Composition
Optical Devices
Radiation Dosimetry
Nondestructive Inspection
Biological Material
Gas Detection
Superconducting Devices
Magnetic Resonance

887 patents:

1. 12735693 - METHOD FOR PRODUCING CHAIN UNSATURATED CARBOXYLIC ACID COMPOUND USING PHENYLALANINE AMMONIA LAYSE (2026-09-15),
2. 12704816 - Physical package for optical lattice clock (2026-08-11),
3. 12703867 - CELL CAPABLE OF ACTIVATING IMMUNE SYSTEM, AND PHARMACEUTICAL COMPOSITION CONTAINING SAID CELL (2026-08-11),
4. 12697805 - Propulsion strengthening member (2026-08-04),
5. 12697384 - MULTIPLE ANTIGENIC PEPTIDE AGAINST CORONAVIRUS AND IMMUNOSTIMULATING COMPOSITION CONTAINING THE SAME (2026-08-04),
6. 12696570 - Light-receiving device, X-ray imaging device, and electronic apparatus (2026-07-28),
7. 12679805 - Bioactive substance exhibiting antimalarial activity, and use for same (2026-07-14),
8. 12670235 - Classification device, classification method, program, and information recording medium (2026-06-30),
9. 12669496 - Method for evaluating and/or screening a control agent for tissue morphology and/or tissue function (2026-06-30),
10. 12655378 - Cell culture container, fixing tool, observation device, microscope and observation method (2026-06-16),
11. 12648693 - Ophthalmic information processing apparatus, ophthalmic apparatus, ophthalmic information processing method, and recording medium (2026-06-09),
12. 12648688 - Medical system and medical method (2026-06-09),
13. 12644203 - NOVEL CELLULAR PHENOTYPE SCREENING METHOD (2026-06-02),
14. 12644144 - Fluorescent probe for detection of ENPP activity (2026-06-02),
15. 12629395 - COMPOSITION FOR INHIBITING TRYPSIN ACTIVITY CONTAINING AS ACTIVE INGREDIENT BACTERIUM BELONGING TO GENUS PARAPREVOTELLA (2026-05-19),
Riken Corporation is a multinational automotive parts manufacturing company. They specialize in producing a wide range of automotive components such as pistons, engine gaskets, brake pads, and suspension parts. With over 90 years of experience, Riken Corporation is recognized globally for their high-quality products and advanced engineering solutions. They cater to various automobile manufacturers worldwide, offering innovative solutions that enhance vehicle performance and reliability. Visit their website to explore their product offerings and learn more about their commitment to excellence.
This text is generated by artificial intelligence and may not be accurate.

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USPTO Data Jan 1 1976 - Sep 15 2026

Riken Corporation
887 Patents

#5 in Saitama 343-0827

#248 in Japan

#1,139 in the World

Saitama, JP
Saitama, Japan

Riken Corporation

Forward Citations = 3,006

1,648 inventors:

goldMedal Hideki Hirayama (44 out of 46 patents)

silverMedal Shigeyuki Yokoyama (44 out of 54 patents)

bronzeMedal Yoshiki Sasai (37 out of 37 patents)

4.  Atsushi Miyawaki (36 out of 44 patents)

5.  Satoshi Wada (20 out of 33 patents)

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