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For the Inventor, By the Inventor

Ichinomiya, Japan

Yamada Dobby Co., Ltd.

USPTO Granted Patents = 14

% Expired Patents = 7.1


Forward Citations = 73

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18 inventors (with patents filed for the assignee):

goldMedal Kuniyasu Shirai (3 out of 3 patents)

silverMedal Takuya Sato (2 out of 2 patents)

bronzeMedal Yoshihiro Otoshi (2 out of 2 patents)

4.  Hiroyuki Mizuguchi (2 out of 2 patents)

5.  Hiroshi Kitagawa (1 out of 6 patents)

6.  Kazuo Hiramitsu (1 out of 1 patent)

7.  Sotaro Ishihara (1 out of 1 patent)

8.  Takeo Yamada (1 out of 1 patent)

9.  Akihiro Yoshida (1 out of 10 patents)

10.  Akira Koyama (1 out of 1 patent)

11.  Nishikayama Tomio (1 out of 1 patent)

12.  Masaaki Sato (1 out of 3 patents)

13.  Hiroyuki Mizoguchi (1 out of 1 patent)

14.  Yasuhide Takase (1 out of 1 patent)

15.  Toshio Metoki (1 out of 1 patent)


14 patents:

1. 8393070 - Method and production line for laminate assembly (2013-03-12),
2. 7168158 - Stacked core assembly apparatus (2007-01-30),
3. 7020948 - Method for assembling a stacked core (2006-04-04),
4. 6565042 - Emergency parachute (2003-05-20),
5. 6179189 - Control device of continuous material feed device (2001-01-30),
6. 6112871 - Clutch/brake device in press for little noise (2000-09-05),
7. 6070521 - Slide control device of press (2000-06-06),
8. 4566499 - Jacquard mechanism (1986-01-28),
9. 4489763 - Leveling device of dobby machine (1984-12-25),
10. 4481979 - Heald frame driving method in negative dobby machines or cam machines (1984-11-13),
11. 4474221 - Positive dobby machine (1984-10-02),
12. 4386631 - Negative double lift dobby machine (1983-06-07),
13. 4067364 - Apparatus for reversing and racing a card in a dobby machine (1978-01-10),
14. 3951176 - Hook connecting apparatus in a chain disc-type dobby machine (1976-04-20),
Company Overview
Yamada Dobby Co., Ltd. is a prominent manufacturer based in Ichinomiya, Japan, specializing in advanced textile machinery. The company focuses on the development of dobby weaving machines, which are essential for producing intricate fabric patterns. Yamada Dobby is recognized for its commitment to innovation in textile technology, enhancing the efficiency and quality of fabric production. The company plays a significant role in the global textile industry, catering to various markets with its cutting-edge solutions.
Profile summary synthesized from public USPTO records and patent filings.

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USPTO Data Jan 1 1976 - Oct 20 2026

14 Patents

#1 in Ichinomiya

#3,584 in Japan

#42,290 in the World

Ichinomiya, JP
Ichinomiya, Japan

Yamada Dobby Co., Ltd.

Forward Citations = 73

18 inventors:

goldMedal Kuniyasu Shirai (3 out of 3 patents)

silverMedal Takuya Sato (2 out of 2 patents)

bronzeMedal Yoshihiro Otoshi (2 out of 2 patents)

4.  Hiroyuki Mizuguchi (2 out of 2 patents)

5.  Hiroshi Kitagawa (1 out of 6 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Yamada Dobby Co., Ltd.. Retrieved from https://idiyas.com/company/yamada-dobby-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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