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Douglas R. Olsen
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Pawling, NY, US
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Patents Grants
last 30 patents
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Patent Grant
System and method for converting the spent remnants of a first pick...
Patent number
7,351,391
Issue date
Apr 1, 2008
Douglas R. Olsen
C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information
Patent Grant
Method and apparatus for recovering acid and metal salts from prick...
Patent number
5,562,828
Issue date
Oct 8, 1996
Douglas R. Olsen
C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Patents Applications
last 30 patents
Information
Patent Application
Regenerating spent pickling liquor
Publication number
20030026746
Publication date
Feb 6, 2003
Douglas R. Olsen
C01 - INORGANIC CHEMISTRY
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Patent Application
Regenerating spent pickling liquor
Publication number
20020005210
Publication date
Jan 17, 2002
Douglas R. Olsen
C01 - INORGANIC CHEMISTRY