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For the Inventor, By the Inventor

Handa, Japan

Tsukasa Co., Ltd.

Calculating rank
USPTO Granted Patents = 15


Forward Citations = 37

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5 inventors (with patents filed for the assignee):

goldMedal Fumio Kato (6 out of 17 patents)

silverMedal Tomonori Seki (6 out of 6 patents)

bronzeMedal Yoshio Sakakibara (2 out of 7 patents)

4.  Yasuhiro Ikeda (1 out of 1 patent)

5.  Koji Fukushima (1 out of 1 patent)

6.  Kato Fumio (1 patent)

7.  Seki Tomonori (0 patent)


15 patents:

1. 12466671 - Powder supply device (2025-11-11),
2. D1059447 - Powder particle weighing machine (2025-01-28),
3. 12187559 - Powder supply device (2025-01-07),
4. 12145812 - Particulate material supply apparatus (2024-11-19),
5. D1051190 - Powder particle feeder for weighing (2024-11-12),
6. D1032672 - Powder particle supply feeder (2024-06-25),
7. D848490 - Sieve frame for sifter (2019-05-14),
8. D848489 - Sieve frame for sifter (2019-05-14),
9. 9067212 - Mill (2015-06-30),
10. 8894272 - Powder material agitator (2014-11-25),
11. 8733552 - Cylindrical sieve and cylindrical sifter (2014-05-27),
12. 8240481 - Sifter (2012-08-14),
13. 7896163 - Sifter (2011-03-01),
14. 7534074 - Flow path switchover device for particulate transport (2009-05-19),
15. 7458716 - Particulate mixer having paddles of different lengths (2008-12-02),
Company Overview
Tsukasa Co., Ltd. is a Japanese company based in Handa, specializing in the development and manufacturing of precision machinery and components. The organization focuses on delivering innovative solutions for various industries, including automotive and electronics. With a commitment to quality and technological advancement, Tsukasa engages in research and development to enhance its product offerings, ensuring they meet the evolving needs of its clients both domestically and internationally.
Profile summary synthesized from public USPTO records and patent filings.

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USPTO Data Jan 1 1976 - Oct 27 2026

Tsukasa Co., Ltd. USPTO Patent Assignee Logo
15 Patents

#2 in Handa

#3,448 in Japan

#39,991 in the World

Handa, JP
Handa, Japan

Tsukasa Co., Ltd.

Forward Citations = 37

5 inventors:

goldMedal Fumio Kato (6 out of 17 patents)

silverMedal Tomonori Seki (6 out of 6 patents)

bronzeMedal Yoshio Sakakibara (2 out of 7 patents)

4.  Yasuhiro Ikeda (1 out of 1 patent)

5.  Koji Fukushima (1 out of 1 patent)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Tsukasa Co., Ltd.. Retrieved from https://idiyas.com/company/tsukasa-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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