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David A. Longhini
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Pittsburgh, PA, US
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last 30 patents
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Patent Grant
Froth moderating agent for controlling froth and reducing stickies...
Patent number
6,013,157
Issue date
Jan 11, 2000
BASF Corporation
Chin Li
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Method for controlling froth and reducing stickies in the flotation...
Patent number
5,718,801
Issue date
Feb 17, 1998
PPG Industries, Inc.
Chin Li
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
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Patent Grant
Deinking electrostatic waste paper
Patent number
5,660,684
Issue date
Aug 26, 1997
PPG Industries, Inc.
Chin Li
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE