Forward Citations = 49

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3 inventors (with patents filed for the assignee):

Kazushige Tanabe (3 out of 3 patents)

Mikio Itoh (2 out of 3 patents)

Katsutoshi Bonkohara (1 out of 1 patent)

5 patents: Sort by Forward Citations

1. 5230760 - Method for manufacturing micro membrane pleats type filter cartridge (1993-07-27),

2. 5215661 - Multi-layer filter cartridge (1993-06-01),

3. 5092351 - Multi-layer filter cartridge (1992-03-03),

4. 5026478 - Metal holder and protector for a disposable plastic capsule (1991-06-25),

5. 4882051 - Cartridge filter incorporating a bag-like body (1989-11-21),

Nippon Roki Co., Ltd. is a Japanese company specializing in the manufacturing of automotive filters. Founded in 1950, the company has a strong reputation for producing high-quality filters that are used by various automotive manufacturers around the world. Nippon Roki is committed to innovation, sustainability, and customer satisfaction.

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

Company Badge

USPTO Data Jan 1 1976 - Dec 9 2025

5 Patents

#2,449 in Tokyo

#6,488 in Japan

Tokyo, Japan

Nippon Roki Co., Ltd.

Forward Citations = 49

3 inventors:

Kazushige Tanabe (3 out of 3 patents)

Mikio Itoh (2 out of 3 patents)

Katsutoshi Bonkohara (1 out of 1 patent)

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