Forward Citations = 39

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2 inventors (with patents filed for the assignee):

Keiichi Murakami (4 out of 5 patents)

Syoichi Yasue (4 out of 5 patents)

4 patents: Sort by Forward Citations

1. 5858230 - Hub ring and supporting plate for a filter (1999-01-12),

2. 5829138 - Hub ring and supporting plate for a filter and methods for manufacturing (1998-11-03),

3. 5755034 - Method for manufacturing a hub ring for a filter (1998-05-26),

4. 5611925 - Hub ring and supporting plate for a filter and methods for manufacturing (1997-03-18),

Kabushiki Kaisha Toukai Spring Seisakusho is a leading manufacturer of springs and metal components in Japan. With over 50 years of experience, we specialize in producing high-quality products for various industries including automotive, electronics, and medical. Our advanced technology and strict quality control processes ensure that our customers receive durable and reliable products. Visit our website to learn more about our capabilities and services.

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

Company Badge

USPTO Data Jan 1 1976 - Dec 16 2025

4 Patents

#364 in

#7,420 in Japan

JP

Kabushiki Kaisha Toukai Spring Seisakusho

Forward Citations = 39

2 inventors:

Keiichi Murakami (4 out of 5 patents)

Syoichi Yasue (4 out of 5 patents)

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