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Ralph Berkemann
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RIiegel, DE
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Patents Grants
last 30 patents
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Patent Grant
Nonwoven web and fibers with electret properties, manufacturing pro...
Patent number
10,036,107
Issue date
Jul 31, 2018
Fiberweb Holdings Limited
Ralph Berkemann
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Patents Applications
last 30 patents
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Patent Application
Nonwoven Web and Fibers with Electret Properties, Manufacturing Pro...
Publication number
20130288555
Publication date
Oct 31, 2013
Ralph Berkemann
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL