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Martin A. Langhorst
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Midland, MI, US
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last 30 patents
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Patent Grant
Size separation of particles contained within a material by the use...
Patent number
5,372,721
Issue date
Dec 13, 1994
The Dow Chemical Company
Martin A. Langhorst
G01 - MEASURING TESTING
Information
Patent Grant
Size separation of particles contained within a material by the use...
Patent number
5,183,604
Issue date
Feb 2, 1993
The Dow Chemical Company
Martin A. Langhorst
G01 - MEASURING TESTING
Information
Patent Grant
High performance anion-exchange chromatographic packing composition...
Patent number
4,927,539
Issue date
May 22, 1990
The Dow Chemical Company
Timothy S. Stevens
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information
Patent Grant
Column holder for on-column photometric detection
Patent number
4,854,700
Issue date
Aug 8, 1989
The Dow Chemical Company
Sergio S. Cutie
G01 - MEASURING TESTING
Information
Patent Grant
Method for characterizing the molecular weight and molecular weight...
Patent number
4,532,043
Issue date
Jul 30, 1985
The Dow Chemical Company
Robert K. Prud'homme
G01 - MEASURING TESTING
Information
Patent Grant
High performance analytical column for anion determination
Patent number
4,519,905
Issue date
May 28, 1985
The Dow Chemical Company
Timothy S. Stevens
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information
Patent Grant
High performance anion-exchange chromatographic packing composition
Patent number
4,383,047
Issue date
May 10, 1983
The Dow Chemical Company
Timothy S. Stevens
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL