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For the Inventor, By the Inventor

Chikuma, Japan

Mk Seiko Co., Ltd.

Calculating rank
USPTO Granted Patents = 11

% Expired Patents = 9.1

Forward Citations = 134

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20 inventors (with patents filed for the assignee):

goldMedal Shoichi Takeda (3 out of 3 patents)

silverMedal Hiroo Yamaya (2 out of 2 patents)

bronzeMedal Yoshisada Misawa (2 out of 2 patents)

4.  Makoto Nasu (2 out of 2 patents)

5.  Ikuya Kubota (2 out of 2 patents)

6.  Eiki Maruyama (2 out of 6 patents)

7.  Fumihiko Akahane (1 out of 6 patents)

8.  Akira Yaoita (1 out of 2 patents)

9.  Akira Yoda (1 out of 1 patent)

10.  Eichi Nishimura (1 out of 1 patent)

11.  Tohru Fujiwara (1 out of 1 patent)

12.  Nobushige Kobayashi (1 out of 2 patents)

13.  Hiroshi Hata (1 out of 1 patent)

14.  Soichi Takeda (1 out of 1 patent)

15.  Yukio Soyama (1 out of 1 patent)


11 patents:

1. 7503426 - Reflecting plate type silencer pipe (2009-03-17),
2. 6041614 - Ice-cream maker (2000-03-28),
3. 5967020 - Automatic bread maker (1999-10-19),
4. 5937740 - Automatic bread maker (1999-08-17),
5. 5934177 - Automatic bread maker (1999-08-10),
6. 5860355 - Automatic bread maker (1999-01-19),
7. 5555337 - Surface wave guideline and object detecting device using surface wave (1996-09-10),
8. 5531153 - Bread baking apparatus (1996-07-02),
9. 5364063 - Ice cube tray (1994-11-15),
10. D351759 - Bread baking appliance (1994-10-25),
11. 4844048 - Bread baking appliance (1989-07-04),
Company Overview
Mk Seiko Co., Ltd. is a Japanese company based in Chikuma, specializing in precision manufacturing and the development of advanced mechanical components. The organization focuses on creating high-quality products for various industries, including automotive and industrial machinery. With a commitment to innovation, Mk Seiko integrates cutting-edge technology into its manufacturing processes, ensuring reliability and performance in its offerings. The company is recognized for its expertise in engineering and design, catering to both domestic and international markets.
Profile summary synthesized from public USPTO records and patent filings.

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USPTO Data Jan 1 1976 - Oct 20 2026

11 Patents

#2 in Chikuma

#4,139 in Japan

#51,801 in the World

Chikuma, JP
Chikuma, Japan

Mk Seiko Co., Ltd.

Forward Citations = 134

20 inventors:

goldMedal Shoichi Takeda (3 out of 3 patents)

silverMedal Hiroo Yamaya (2 out of 2 patents)

bronzeMedal Yoshisada Misawa (2 out of 2 patents)

4.  Makoto Nasu (2 out of 2 patents)

5.  Ikuya Kubota (2 out of 2 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Mk Seiko Co., Ltd.. Retrieved from https://idiyas.com/company/mk-seiko-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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