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Yamakyu Chain Co., Ltd.

USPTO Granted Patents = 9

EPO Patents = 2

Forward Citations = 91

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16 inventors (with patents filed for the assignee):

Tsuyoshi Nakamura (2 out of 16 patents)

Motoya Koeda (2 out of 3 patents)

Kazuyuki Kobayashi (2 out of 3 patents)

4. Fukukazu Kato (2 out of 5 patents)

5. Takeshi Arai (1 out of 10 patents)

6. Sumito Sato (1 out of 10 patents)

7. Tomio Maeda (1 out of 1 patent)

8. Atusi Terajima (1 out of 1 patent)

9. Seiichi Fukazawa (1 out of 1 patent)

10. Yukio Ashida (1 out of 1 patent)

11. Masanori Fueki (1 out of 1 patent)

12. Takashi Miya (1 out of 1 patent)

13. Hiroaki Kase (1 out of 1 patent)

14. Masao Funabashi (1 out of 1 patent)

15. Keiji Ohara (1 out of 3 patents)

9 patents: Sort by Forward Citations

1. 6976823 - Work inverting system (2005-12-20),

2. 6854397 - Frame member with traveling rail used in conveyor system and traveling frame assembly using the same (2005-02-15),

3. 6820737 - Traveling frame device in conveyor system (2004-11-23),

4. 6786327 - Connection structure of chain for transportation (2004-09-07),

5. 6758328 - Chain for three-dimensional transfer line (2004-07-06),

6. 6736259 - Chain for three-dimensional transfer line (2004-05-18),

7. 6708818 - Crossover conveyor chain device (2004-03-23),

8. 6308825 - Plastic chain and pin retainer (2001-10-30),

9. 5797820 - Slat band chain and sprocket (1998-08-25),

Yamakyu Chain Co., Ltd. is a leading manufacturer of high-quality chains for various industries including automotive, industrial, and agricultural sectors. With over 50 years of experience, the company is known for its innovative products and commitment to customer satisfaction. Yamakyu Chain Co., Ltd. strives to provide reliable and durable chains that meet the highest standards of quality and performance in the market.

This text is generated by artificial intelligence and may not be accurate.

Company Badge

USPTO Data Jan 1 1976 - Dec 30 2025

9 Patents

#1,783 in Tokyo

#4,576 in Japan

Yamakyu Chain Co., Ltd.

Forward Citations = 91

16 inventors:

Tsuyoshi Nakamura (2 out of 16 patents)

Motoya Koeda (2 out of 3 patents)

Kazuyuki Kobayashi (2 out of 3 patents)

4. Fukukazu Kato (2 out of 5 patents)

5. Takeshi Arai (1 out of 10 patents)

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