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Treatment of phosphatizing waste water
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Patent number 6,464,879
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Issue date Oct 15, 2002
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Henkel Kommanditgesellschaft auf Aktien
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Jan-Willem Brouwer
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C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
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Method for replenishing baths
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Patent number 6,372,055
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Issue date Apr 16, 2002
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Shipley Company, L.L.C.
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Joseph R. Montano
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C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
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Coating an aluminum alloy substrate
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Patent number 6,020,030
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Issue date Feb 1, 2000
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Aluminum Company of America
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Joseph D. Guthrie
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C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
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Method of recycling phosphating sludges
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Patent number 5,350,517
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Issue date Sep 27, 1994
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Henkel Kommanditgesellschaft auf Aktien
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Willi Buchmeier
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C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
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Phosphating process
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Patent number 5,135,583
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Issue date Aug 4, 1992
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Metallgesellschaft Aktiengesellschaft
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Horst Gehmecker
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C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
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Process of phosphating metal surfaces
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Patent number 5,039,361
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Issue date Aug 13, 1991
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Metallgesellschaft Aktiengesellschaft
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Dieter Hauffe
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C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
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Chromium recovery process
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Patent number 4,952,320
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Issue date Aug 28, 1990
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Fremont Industries, Inc.
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Paul Spekman
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C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
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Coating solution for metal surfaces
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Patent number 4,370,177
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Issue date Jan 25, 1983
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Amchem Products, Inc.
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Frank J. Frelin
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C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
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Metal treatment
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Patent number 4,278,477
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Issue date Jul 14, 1981
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Amchem Products, Inc.
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Earl R. Reinhold
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C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...