Louis M Schlesinger

7942351, May 17, 2011

Jun 25, 2010

12/823313

Louis M. Schlesinger - Spruce Pine NC, US
Mauricio Duran Sanchez - Monterrey, MX
Gerardo Hernandez Gonzalez - San Nicolas de los Garza, MX
Artemio Gonzalez Acevedo - San Nicolas de los Garza, MX

Unimin Corporation - New Canaan CT

B02C 19/00

241 19, 241 29, 241 30

The method of converting nepheline syenite particulate feedstock with a grain size profile to an ultra-fine grain finish product for subsequent commercial use, the ultra-fine grain final product has a maximum grain size of less than about 6 microns. The method comprising: providing a dry feedstock with a controlled maximum particle size greater than about 20 microns; grinding the feedstock in a dry state by passing the feedstock vertically downward through a continuous, high-speed stirred ball mill whereby the feedstock is ground into an intermediate powder having a drastically reduced grain size profile than the grain size profile of the feedstock; and passing the intermediate powder from the mill through an air classifier using a rapidly moving high speed air stream moving along a given path to convey the ultra-fine grain product along the path and from the classifier and to allow coarse particulate material including particles larger than the ultra-fine product to be separated and then expelled from the classifier.

8070080, Dec 6, 2011

Jan 5, 2011

12/985071

Louis M. Schlesinger - Spruce Pine NC, US
Mauricio Duran Sanchez - Monterrey, MX
Gerardo Hernandez Gonzalez - San Nicolas de los Garza, MX
Artemio Gonzalez Acevedo - San Nicolas de los Garza, MX

Unimin Corporation - New Canaan CT

B02C 19/00

241 19, 241 30

The method of converting nepheline syenite particulate feedstock with a grain size profile to an ultra-fine grain finish product for subsequent commercial use, the ultra-fine grain final product has a maximum grain size of less than about 6 microns. The method comprising: providing a dry feedstock with a controlled maximum particle size greater than about 20 microns; grinding the feedstock in a dry state by passing the feedstock vertically downward through a continuous, high-speed stirred ball mill whereby the feedstock is ground into an intermediate powder having a drastically reduced grain size profile than the grain size profile of the feedstock; and passing the intermediate powder from the mill through an air classifier using a rapidly moving high speed air stream moving along a given path to convey the ultra-fine grain product along the path and from the classifier and to allow coarse particulate material including particles larger than the ultra-fine product to be separated and then expelled from the classifier.

8182601, May 22, 2012

Sep 25, 2008

12/237628

David D. Kragten - Burnsville NC, US
Christy Karr, Jr. - Imperial PA, US
Scott VanRemortel - Bakersville NC, US
Robert Ratcliff - Bakersville NC, US
Ibezim Anazia - Burnsville NC, US
Louis M. Schlesinger - Spruce Pine NC, US

Unimin Corporation - New Canaan CT

C04B 14/00
B32B 5/16
B32B 9/00
B32B 15/02
B32B 17/02
B32B 19/00

106400, 428402

An ultra-fine powder formed from a naturally occurring mineral or rock material and having a controlled or “engineered” particle size distribution (PSD) to match the infrared spectra with a maximum particle size in the range of 14-17 microns measured as either D99, or preferably D95, and a minimum particle size D5 in the range of 4-7 microns. Preferably the maximum particle size is about 15 microns, the minimum particle size is about 5 microns and the D50 particle size is about 8-10 microns with the moisture content of the particle size “engineered” powder being less than about 0. 20 percent by weight and preferably about 0. 05 to 0. 08 percent by weight of the powder. This specially “engineered” ultra-fine powder is used to reduce the thermicity of thermal film to a value less than about 20%.

20080185463, Aug 7, 2008

Jan 22, 2008

12/009693

Louis M. Schlesinger - Spruce Pine NC, US
Mauricio Duran Sanchez - Monterrey, MX
Gerardo Hernandez Gonzalez - San Nicolas De Los Garza, MX
Artemio Gonzalez Acevedo - San Nicolas de los Garza, MX

B02C 23/12
B02C 4/00

241 19, 241172, 241 97

The method of converting nepheline syenite particulate feedstock with a grain size profile to an ultra-fine grain finish product for subsequent commercial use, the ultra-fine grain final product has a maximum grain size of less than about 6 microns. The method comprising: providing a dry feedstock with a controlled maximum particle size greater than about 20 microns; grinding the feedstock in a dry state by passing the feedstock vertically downward through a continuous, high-speed stirred ball mill whereby the feedstock is ground into an intermediate powder having a drastically reduced grain size profile than the grain size profile of the feedstock; and passing the intermediate powder from the mill through an air classifier using a rapidly moving high speed air stream moving along a given path to convey the ultra-fine grain product along the path and from the classifier and to allow coarse particulate material including particles larger than the ultra-fine product to be separated and then expelled from the classifier.

20090013905, Jan 15, 2009

Jun 27, 2008

12/215643

Scott VanRemortel - Bakersville NC, US
Robert Ratcliff - Bakersville NC, US
Ibezim Anazia - Burnsville NC, US
Louis M. Schlesinger - Spruce Pine NC, US

C04B 14/00
B03B 9/00
B02C 19/06
B02C 23/30

106439, 209 2, 241 5, 241 19

An ultra-fine nepheline syenite powder produced from a pre-processed nepheline syenite powder feedstock. The powder having a “controlled” maximum grain size D95 or D99 of less than about 20 microns and a “controlled” minimum grain size D5 in the range of 2-8 microns with a particle size spread D5-D95 of less than about 12 microns.

20110165421, Jul 7, 2011

Jan 5, 2011

12/985035

Louis M. Schlesinger - Spruce Pine NC, US
Mauricio Duran Sanchez - Monterrey, MX
Gerardo Hernandez Gonzalez - San Nicolas de los Garza, MX
Artemio Gonzalez Acevedo - San Nicolas de los Garza, MX

UNIMIN CORPORATION - New Canaan CT

C04B 35/16
B02C 23/08

428402, 241 241

The method of converting nepheline syenite particulate feedstock with a grain size profile to an ultra-fine grain finish product for subsequent commercial use, the ultra-fine grain final product has a maximum grain size of less than about 6 microns. The method comprising: providing a dry feedstock with a controlled maximum particle size greater than about 20 microns; grinding the feedstock in a dry state by passing the feedstock vertically downward through a continuous, high-speed stirred ball mill whereby the feedstock is ground into an intermediate powder having a drastically reduced grain size profile than the grain size profile of the feedstock; and passing the intermediate powder from the mill through an air classifier using a rapidly moving high speed air stream moving along a given path to convey the ultra-fine grain product along the path and from the classifier and to allow coarse particulate material including particles larger than the ultra-fine product to be separated and then expelled from the classifier.

20120171491, Jul 5, 2012

Mar 15, 2012

13/420757

David D. Kragten - Burnsville NC, US
Christy Karr, JR. - Imperial PA, US
Scott VanRemortel - Bakersville NC, US
Robert Ratcliff - Bakersville NC, US
Ibezim Anazia - Burnsville NC, US
Louis M. Schlesinger - Spruce Pine NC, US

UNIMIN CORPORATION - New Canaan CT

B32B 19/00

428402

An ultra-fine powder formed from a naturally occurring mineral or rock material and having a controlled or “engineered” particle size distribution (PSD) to match the infrared spectra with a maximum particle size in the range of 14-17 microns measured as either D99, or preferably D95, and a minimum particle size D5 in the range of 4-7 microns. Preferably the maximum particle size is about 15 microns, the minimum particle size is about 5 microns and the D50 particle size is about 8-10 microns with the moisture content of the particle size “engineered” powder being less than about 0.20 percent by weight and preferably about 0.05 to 0.08 percent by weight of the powder. This specially “engineered” ultra-fine powder is used to reduce the thermicity of thermal film to a value less than about 20%.

20120263954, Oct 18, 2012

Apr 26, 2012

13/456307

Scott Van Remortel - Bakersville NC, US
Robert Ratcliff - Bakersville NC, US
Ibezim Anazia - Burnsville NC, US
Louis M. Schlesinger - Spruce Pine NC, US

UNIMIN CORPORATION - New Canaan CT

C08K 3/34
B32B 5/16

428402, 106467

An ultra-fine inorganic powder for use as a filler and formed from a hard, naturally occurring mined material, in particular nepheline syenite, where the powder has a targeted controlled maximum particle size of less than 5 microns and a generally uncontrolled minimum particle size.