For the Inventor, By the Inventor

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Waukesha, WI, United States of America

Filtration Systems, Inc.

USPTO Granted Patents = 2

Forward Citations = 69

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4 inventors (with patents filed for the assignee):

Douglas G Bayerlein (1 out of 46 patents)

Richard E Bayerlein (1 out of 2 patents)

Keiichi Murakami (1 out of 5 patents)

4. Syoichi Yasue (1 out of 5 patents)

2 patents: Sort by Forward Citations

1. 6153098 - Spiral wound filter with central barrier (2000-11-28),

2. 5611925 - Hub ring and supporting plate for a filter and methods for manufacturing (1997-03-18),

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USPTO Data Jan 1 1976 - Sep 29 2026

2 Patents

#78 in Waukesha, WI

#1,893 in Wisconsin

#94,730 in US

Waukesha, WI, United States of America

Filtration Systems, Inc.

Forward Citations = 69

4 inventors:

Douglas G Bayerlein (1 out of 46 patents)

Richard E Bayerlein (1 out of 2 patents)

Keiichi Murakami (1 out of 5 patents)

4. Syoichi Yasue (1 out of 5 patents)

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