GERALD D ERDMAN
Engineers in Reading, PA
License number
Pennsylvania PE027835E
Category
Engineers
Type
Professional Engineer
Address
Address
Reading, PA 19606
Professional information
Method And Apparatus For Continuous Gas Liquid Reactions
US Patent:
6451268, Sep 17, 2002
Filed:
Apr 16, 1999
Appl. No.:
09/293614
Inventors:
Gerald Dean Erdman - Reading PA
Assignee:
Minerals Technologies Inc. - Bethlehem PA
International Classification:
B01F 304
US Classification:
422236, 422189, 261123, 3661815, 366336
Abstract:
A method and apparatus for improving contact between a liquid and a reactant gas by moving the liquid in a serpentine path that moves horizontally and vertically through individual chambers or stations in an elongated tank or reactor and introducing a reactant gas into the liquid in one or more of the stations or chambers as the liquid moves through the tank or reactor.
Method And Apparatus For Concentrating Slurried Solids
US Patent:
6454907, Sep 24, 2002
Filed:
Apr 19, 1999
Appl. No.:
09/294161
Inventors:
Gerald Dean Erdman - Reading PA
Assignee:
Minerals Technologies, Inc. - Bethlehem PA
International Classification:
B01D 342
US Classification:
203 1, 159 44, 159 473, 159901, 159DIG 16, 159DIG 40, 159 21, 202197, 202177, 202205, 203 11, 203 40, 203 94, 203 98, 203 88
Abstract:
Method and apparatus for concentrating slurries by removing liquid in a single effect unit maintained under vacuum to effect low temperature flashing of the liquid. The single effect unit is a single flash column with separate recirculation loops, one to preheat incoming slurry for concentration and a separate loop for withdrawal of concentrated slurry Vapor from the flash column can be treated to separate liquid from other components in the vapor.
Pcc Filler Composition For Improved Printability Of Supercalendered Papers
US Patent:
2014000, Jan 2, 2014
Filed:
Apr 5, 2012
Appl. No.:
14/003260
Inventors:
David Lee Smith - Catasauqua PA, US
Gerald D. Erdman - Reading PA, US
Marko Pohjolainen - Kaarina, FI
Joseph A. Sohara - Northampton PA, US
Gerald D. Erdman - Reading PA, US
Marko Pohjolainen - Kaarina, FI
Joseph A. Sohara - Northampton PA, US
Assignee:
Specialty Minerals (Michigan) Inc. - Bingham Farms MI
International Classification:
D21H 17/67
US Classification:
106464
Abstract:
A method of blending a fine precipitated calcium carbonate (PCC) filler with larger PCC, the resulting blend to be used alone or in conjunction with a ground carbonate, clay or other filler, resulting in improved porosity by the lowering of the porosity of supercalendered paper, thereby imparting improved and offset printability. The fine PCC can be ultrafine PCC filler which then is blended with other fillers including but not limited to pigments. These fillers which are blended with the fine PCC include commercial and experimental PCC and commercial clays. Ultrafine PCC has agglomerates of small, discrete particles. Ultrafine PCC for use in the invention has a specific surface area of about 20 m2/g as measured by BET gas adsorption. As measured by a sedigraph, the average size of these agglomerates is from 0.4 to 1.1 microns.
Method And Apparatus For Continuous Gas Liquid Reactions
US Patent:
7387769, Jun 17, 2008
Filed:
May 8, 2002
Appl. No.:
10/141564
Inventors:
Gerald Dean Erdman - Reading PA, US
Assignee:
Minerals Technologies Inc. - New York NY
International Classification:
C01F 11/18
US Classification:
423432
Abstract:
A method and apparatus for improving contact between a liquid and a reactant gas by moving the liquid in a serpentine path that moves horizontally and vertically through individual chambers or stations in an elongated tank or reactor and introducing a reactant gas into the liquid in one or more of the stations or chambers as the liquid moves through the tank or reactor.