Works of: Dr. Hans T. Clarke

Works of: Dr. Hans T. Clarke
1 to 24 of 48
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Cast of Out of the Fog
Photograph
Unidentified
1922
2009.0519.0001
Joseph Thacher Clarke with sons (Eric and Hans)
Photograph
Joseph Thacher Clarke
ca. 1905
1998.0428.0001
Joseph Thacher Clarke and his family
Photograph
Joseph Thacher Clarke
ca. 1905
1998.0425.0001
Patent- Method For The Dehydration of Formic Acid
Documentary
Donald F. Othmer
1931/10/06
1997.2649.0001
Patent- Process of Esterifying Cellulose Materials With Fatty Acids
Documentary
Dr. Hans T. Clarke
1931/09/15
1997.2648.0001
Patent- Recovery of Cellulose Acetate From Acetic Acid Solutions
Documentary
Dr. Hans T. Clarke
1931/09/15
1997.2647.0001
Patent- Cellulose ester composition
Documentary
Dr. Hans T. Clarke
1931/06/09
1997.2646.0001
Patent- Process of Removing Water From Aqueous Acetic Acid
Documentary
Dr. Hans T. Clarke
1931/05/12
1997.2645.0001
Patent- Photographic Sensitizer and Process For Making It
Documentary
Dr. Hans T. Clarke
1931/05/12
1997.2644.0001
Patent- Method for making aminophenol derivatives
Documentary
Dr. Hans T. Clarke
1930/02/04
1997.2009.0001
Patent- Process for making unsaturated acyl cellulose esters
Documentary
Carl J. Malm
1929/12/10
1997.2008.0001
Patent- Process of making mixed organic esters of cellulose
Documentary
Dr. Hans T. Clarke
1929/11/12
1997.2007.0001
Patent- Process of making a ketene.
Documentary
C. E. Waring
1929/08/06
1997.2006.0001
Patent- Process of making organic esters of cellulose.
Documentary
Dr. Hans T. Clarke
1929/06/11
1997.2005.0001
Patent- Soluble halogen-substituted cellulosic organic acid esters
Documentary
Carl J. Malm
1929/03/05
1997.2004.0001
Patent- Mixed cellulose organic esters & process for making
Documentary
Dr. Hans T. Clarke
1929/03/05
1997.2003.0001
Patent- Method of making 2:4-Dimethyl-6-Ethoxyquinoline
Documentary
E. R. Taylor
1929/02/05
1997.2002.0001
Patent- Process of making cellulosic esters cont. fatty acid grps.
Documentary
Dr. Hans T. Clarke
1929/01/08
1997.2001.0001
Patent- Process of making cellulose aceto esters cont. acyl grps.
Documentary
Carl J. Malm
1929/01/08
1997.2000.0001
Patent- Cellulose esters containing unsaturated organic acid groups
Documentary
Dr. Hans T. Clarke
1928/11/06
1997.1998.0001
Patent- Cellulose esters
Documentary
Carl J. Malm
1928/10/09
1997.1997.0001
Patent- Process Esterifying Mercerized Cellulose With Lower Fatty Acid
Documentary
Dr. Hans T. Clarke
1928/10/09
1997.1996.0001
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