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Frederick Ahrens
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Hortonville, WI, US
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last 30 patents
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Patent Grant
Method of controlling headbox jet velocity for foamed furnishes
Patent number
6,355,142
Issue date
Mar 12, 2002
Fort James Corporation of Virginia
Frederick W. Ahrens
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Papermaking fabric, process for producing high bulk products and th...
Patent number
5,853,547
Issue date
Dec 29, 1998
Asten, Inc.
Frederick W. Ahrens
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
High softness embossed tissue
Patent number
5,409,572
Issue date
Apr 25, 1995
James River Corporation of Virginia
Thomas N. Kershaw
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Multi-layer papers and tissues
Patent number
5,227,023
Issue date
Jul 13, 1993
James River Corporation of Virginia
Joseph R. Pounder
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Extraction method and apparatus
Patent number
5,137,551
Issue date
Aug 11, 1992
James River Corporation of Virginia
Frederick Ahrens
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE