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For the Inventor, By the Inventor

Tokyo, Japan

Smk Co., Ltd.


USPTO Granted Patents = 23

% Expired Patents = 4.3

Forward Citations = 302

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17 inventors (with patents filed for the assignee):

goldMedal Masato Hidaka (8 out of 12 patents)

silverMedal Naoyuki Ono (3 out of 35 patents)

bronzeMedal Seiichi Morikawa (3 out of 10 patents)

4.  Kazunori Yamada (2 out of 18 patents)

5.  Osamu Kamishima (2 out of 6 patents)

6.  Hidemasa Sakurada (1 out of 6 patents)

7.  Taketo Takata (1 out of 3 patents)

8.  Haruo Yoshida (1 out of 40 patents)

9.  Hiroshi Yokozawa (1 out of 6 patents)

10.  Tatsuo Kato (1 out of 9 patents)

11.  Yousuke Sakai (1 out of 1 patent)

12.  Kouji Togashi (1 out of 2 patents)

13.  Kazuhiro Nemoto (1 out of 1 patent)

14.  Akihiko Sakuramoto (1 out of 2 patents)

15.  Yukio Akaba (1 out of 3 patents)


23 patents:

1. D1067290 - Lower electrode unit for welding (2025-03-18),
2. D1053919 - Robot twin arm for welding (2024-12-10),
3. D940217 - Adapter for an electrode for electric welding (2022-01-04),
4. D939001 - Lower electrode structure for welding (2021-12-21),
5. D881243 - Welding electrode tip (2020-04-14),
6. D667857 - Electrode tip for resistive welders (2012-09-25),
7. D647547 - Lower electrode structure for welding (2011-10-25),
8. 7078648 - Curved electrode for welding (2006-07-18),
9. 6024606 - Connector plug (2000-02-15),
10. D419133 - Connector for a battery (2000-01-18),
11. 5897397 - Connector plug for automobiles (1999-04-27),
12. 5894117 - Keyboard switch for notebook type computer or the like (1999-04-13),
13. 5725400 - Connecting terminal section structure (1998-03-10),
14. 5718605 - Connector socket (1998-02-17),
15. 5662480 - Surface mount type coaxial connector connecting coaxial cable to (1997-09-02),
Company Overview
Smk Co., Ltd. is a Tokyo-based company specializing in the development and manufacturing of electronic components and connectivity solutions. The organization focuses on innovative technologies in areas such as telecommunications, automotive electronics, and industrial applications. With a commitment to quality and advanced engineering, Smk aims to enhance connectivity and functionality in various devices, catering to a diverse range of industries and contributing to the evolution of modern technology.
Profile summary synthesized from public USPTO records and patent filings.

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USPTO Data Jan 1 1976 - Oct 13 2026

23 Patents

#1,246 in Tokyo

#2,705 in Japan

#27,685 in the World

Tokyo, JP
Tokyo, Japan

Smk Co., Ltd.

Forward Citations = 302

17 inventors:

goldMedal Masato Hidaka (8 out of 12 patents)

silverMedal Naoyuki Ono (3 out of 35 patents)

bronzeMedal Seiichi Morikawa (3 out of 10 patents)

4.  Kazunori Yamada (2 out of 18 patents)

5.  Osamu Kamishima (2 out of 6 patents)

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