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For the Inventor, By the Inventor

Tokyo, Japan

Tomy Kogyo Co., Ltd.

Calculating rank
USPTO Granted Patents = 376


Forward Citations = 4,301

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174 inventors (with patents filed for the assignee):

goldMedal Masami Shiraishi (13 out of 25 patents)

silverMedal Michael W Nuttall (13 out of 53 patents)

bronzeMedal Yuji Kato (10 out of 17 patents)

4.  Masaki Ikeda (9 out of 11 patents)

5.  Hiroyuki Watanabe (9 out of 67 patents)

6.  Hitoshi Itakura (9 out of 13 patents)

7.  Masaki Mayuzumi (9 out of 16 patents)

8.  Takao Matsumoto (9 out of 17 patents)

9.  Michihiro Kozuka (8 out of 10 patents)

10.  Noriaki Iwao (8 out of 8 patents)

11.  Akio Tsuyuki (8 out of 8 patents)

12.  Toyotsugu Ogasawara (7 out of 7 patents)

13.  Takashi Kaga (7 out of 7 patents)

14.  Toshiaki Takizawa (7 out of 8 patents)

15.  Toshinori Tabata (7 out of 7 patents)


Core Competencies:
Centrifugal Separator
Centrifuge
Ball Balancer
Rotor Mounting
Toy Robot
Animated Toy
Game Apparatus
Light Projecting Toy
Animal Toys
Toy Vehicle
Water Game
Toy Microscope

376 patents:

1. 10618061 - Support structure for rotation driving system having ball balancer (2020-04-14),
2. D833638 - Desktop centrifuge (2018-11-13),
3. D831841 - Desktop centrifuge (2018-10-23),
4. D815751 - Desktop centrifuge (2018-04-17),
5. 7419464 - Rotor mounting structure for centrifugal separator (2008-09-02),
6. D525890 - Centrifugal separator (2006-08-01),
7. 6805843 - Slide glass rack for use in centrifugal apparatus (2004-10-19),
8. 6459918 - Brain electrode securing device (2002-10-01),
9. 6390965 - Centrifugal separator having sliding linked racks parts for easy insertion and removal into the rotor (2002-05-21),
10. 4995606 - Board game (1991-02-26),
11. D312847 - Audible toy boat (1990-12-11),
12. 4976650 - Device for starting a toy (1990-12-11),
13. D311033 - Rotatable game housing (1990-10-02),
14. D311032 - Water game (1990-10-02),
15. 4941857 - Animal toys having switch and vibration motor (1990-07-17),
Company Overview
Tomy Kogyo Co., Ltd. is a Tokyo-based company specializing in centrifugal technology, focusing on the development and manufacturing of advanced centrifugal separators and centrifuges. Their expertise extends to innovative applications such as ball balancers and rotor mounting systems, showcasing their commitment to precision engineering. Additionally, Tomy Kogyo is recognized for its contributions to the toy industry, producing animated toys, game apparatus, and light projecting toys, blending technology with entertainment to engage consumers of all ages.
Profile summary synthesized from public USPTO records and patent filings.

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USPTO Data Jan 1 1976 - Oct 27 2026

376 Patents

#228 in Tokyo

#455 in Japan

#2,462 in the World

Tokyo, JP
Tokyo, Japan

Tomy Kogyo Co., Ltd.

Forward Citations = 4,301

174 inventors:

goldMedal Masami Shiraishi (13 out of 25 patents)

silverMedal Michael W Nuttall (13 out of 53 patents)

bronzeMedal Yuji Kato (10 out of 17 patents)

4.  Masaki Ikeda (9 out of 11 patents)

5.  Hiroyuki Watanabe (9 out of 67 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Tomy Kogyo Co., Ltd.. Retrieved from https://idiyas.com/company/tomy-kogyo-company

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]
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