Patents by Inventor Charles W. Propst, Jr.

Charles W. Propst, Jr. has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 9133582
    Abstract: A laminated panel formed of a paper coated with three layers. The paper can be selected from liner, medium or other paper. The first layer comprises an acrylic containing polymer a clay synthetic polyethylene, a defoamer a cross-linking agent water and optionally a pigment. The second layer comprises a polymethyl methylacrylate polymer a synthetic polyethylene a clay a defoamer and water. A third layer comprises colloidal silica urea water and a defoamer. Composites of the above paper bonded to an expanded polystyrene block are also disclosed.
    Type: Grant
    Filed: April 14, 2011
    Date of Patent: September 15, 2015
    Assignee: SPECTRA-KOTE CORPORATION
    Inventor: Charles W. Propst, Jr.
  • Patent number: 8734895
    Abstract: In order to provide grease, oil and wax resistance to a paper substrate, a coating containing a binder, a filler material and calcium carbonate is used. The coating of the invention is essentially free from fluorocarbons, which are considered harmful to human and animal populations, and surfactants and other chemicals which may alter the color of the coated paper. The coated paper has a GE brightness level between approximately 50 and approximately 90, while providing superior grease, oil and wax resistance.
    Type: Grant
    Filed: August 20, 2010
    Date of Patent: May 27, 2014
    Assignee: Spectra-Kote Corporation
    Inventor: Charles W. Propst, Jr.
  • Publication number: 20140113148
    Abstract: A laminated panel formed of a paper coated with three layers. The paper can be selected from liner, medium or other paper. The first layer comprises an acrylic containing polymer a clay synthetic polyethylene, a defoamer a cross-linking agent water and optionally a pigment. The second layer comprises a polymethyl methylacrylate polymer a synthetic polyethylene a clay a defoamer and water. A third layer comprises colloidal silica urea water and a defoamer. Composites of the above paper bonded to an expanded polystyrene block are also disclosed.
    Type: Application
    Filed: April 14, 2011
    Publication date: April 24, 2014
    Inventor: Charles W. Propst, JR.
  • Patent number: 8475629
    Abstract: Additives for paper making are disclosed herein. Specifically, the additives are wax-free alternatives to conventional coatings, including ASA, AKD and optionally an acrylic containing composition. Other additives may be included in the coating, such as cationic particles or compositions. The coatings may be used at a variety of points during the paper making process, including on the calender stack and in the wet end.
    Type: Grant
    Filed: September 29, 2008
    Date of Patent: July 2, 2013
    Assignee: Spectra Kote Corporation
    Inventors: Charles W. Propst, Jr., James C. Jones
  • Patent number: 8333872
    Abstract: Additives for paper making are disclosed herein. Specifically, the additives are wax-free alternatives to conventional coatings, including ASA, AKD and optionally an acrylic containing composition. Other additives may be included in the coating, such as cationic particles or compositions. The coatings may be used at a variety of points during the paper making process, including on the calender stack and in the wet end.
    Type: Grant
    Filed: May 13, 2011
    Date of Patent: December 18, 2012
    Assignee: Spectra-Kote Corporation
    Inventors: Charles W. Propst, Jr., James C. Jones
  • Publication number: 20120291972
    Abstract: Additives for paper making are disclosed herein. Specifically, the additives are wax-free alternatives to conventional coatings, including ASA, AKD and optionally an acrylic containing composition. Other additives may be included in the coating, such as cationic particles or compositions. The coatings may be used at a variety of points during the paper making process, including on the calender stack and in the wet end.
    Type: Application
    Filed: August 6, 2012
    Publication date: November 22, 2012
    Inventors: Charles W. Propst, JR., James C. Jones
  • Patent number: 8236136
    Abstract: Additives for paper making are disclosed herein. Specifically, the additives are wax-free alternatives to conventional coatings, including ASA, AKD and optionally an acrylic containing composition. Other additives may be included in the coating, such as cationic particles or compositions. The coatings may be used at a variety of points during the paper making process, including on the calender stack and in the wet end.
    Type: Grant
    Filed: February 25, 2010
    Date of Patent: August 7, 2012
    Assignee: Spectra-Kote Corporation
    Inventors: Charles W. Propst, Jr., James C. Jones
  • Publication number: 20110220306
    Abstract: Additives for paper making are disclosed herein. Specifically, the additives are wax-free alternatives to conventional coatings, including ASA, AKD and optionally an acrylic containing composition. Other additives may be included in the coating, such as cationic particles or compositions. The coatings may be used at a variety of points during the paper making process, including on the calender stack and in the wet end.
    Type: Application
    Filed: May 13, 2011
    Publication date: September 15, 2011
    Inventors: Charles W. Propst, JR., James C. Jones
  • Publication number: 20100316807
    Abstract: In order to provide grease, oil and wax resistance to a paper substrate, a coating containing a binder, a filler material and calcium carbonate is used. The coating of the invention is essentially free from fluorocarbons, which are considered harmful to human and animal populations, and surfactants and other chemicals which may alter the color of the coated paper. The coated paper has a GE brightness level between approximately 50 and approximately 90, while providing superior grease, oil and wax resistance.
    Type: Application
    Filed: August 20, 2010
    Publication date: December 16, 2010
    Inventor: Charles W. Propst, JR.
  • Patent number: 7833915
    Abstract: In order to provide grease, oil and wax resistance to a paper substrate, a coating containing a binder, a filler material and calcium carbonate is used. The coating of the invention is essentially free from fluorocarbons, which are considered harmful to human and animal populations, and surfactants and other chemicals which may alter the color of the coated paper. The coated paper has a GE brightness level between approximately 50 and approximately 90, while providing superior grease, oil and wax resistance.
    Type: Grant
    Filed: June 29, 2001
    Date of Patent: November 16, 2010
    Assignee: Spectra-Kote Corporation
    Inventor: Charles W. Propst, Jr.
  • Publication number: 20100147478
    Abstract: Additives for paper making are disclosed herein. Specifically, the additives are wax-free alternatives to conventional coatings, including ASA, AKD and optionally an acrylic containing composition. Other additives may be included in the coating, such as cationic particles or compositions. The coatings may be used at a variety of points during the paper making process, including on the calender stack and in the wet end.
    Type: Application
    Filed: February 25, 2010
    Publication date: June 17, 2010
    Inventors: Charles W. Propst, JR., James C. Jones
  • Publication number: 20090020249
    Abstract: Additives for paper making are disclosed herein. Specifically, the additives are wax-free alternatives to conventional coatings, including ASA, AKD and optionally an acrylic containing composition. Other additives may be included in the coating, such as cationic particles or compositions. The coatings may be used at a variety of points during the paper making process, including on the calender stack and in the wet end.
    Type: Application
    Filed: September 29, 2008
    Publication date: January 22, 2009
    Inventors: Charles W. PROPST, JR., James C. Jones
  • Patent number: 7429309
    Abstract: Additives for paper making are disclosed herein. Specifically, the additives are wax-free alternatives to conventional coatings, including ASA, AKD and optionally an acrylic containing composition. Other additives may be included in the coating, such as cationic particles or compositions. The coatings may be used at a variety of points during the paper making process, including on the calender stack and in the wet end.
    Type: Grant
    Filed: October 24, 2003
    Date of Patent: September 30, 2008
    Assignee: Spectra-Kote Corporation
    Inventors: Charles W. Propst, Jr., James C. Jones
  • Publication number: 20040185286
    Abstract: In order to provide grease, oil and wax resistance to a paper substrate, a coating containing a binder, a filler material and calcium carbonate is used. The coating of the invention is essentially free from fluorocarbons, which are considered harmful to human and animal populations, and surfactants and other chemicals which may alter the color of the coated paper. The coated paper has a GE brightness level between approximately 50 and approximately 90, while providing superior grease, oil and wax resistance.
    Type: Application
    Filed: February 10, 2004
    Publication date: September 23, 2004
    Inventor: Charles W. Propst Jr
  • Patent number: 6340517
    Abstract: A security stock material for use in lottery tickets or other instruments where prevention of the viewing of indicia on the lottery ticket is achieved despite tampering to make the stock material translucent by chemical or other means. A method of making the stock material by combining natural brown kraft linerboard with bleached fibers on one side and a black ink or black coating on the other side is also disclosed.
    Type: Grant
    Filed: February 29, 2000
    Date of Patent: January 22, 2002
    Assignee: SKC Acquisition Corporation
    Inventor: Charles W. Propst, Jr.
  • Patent number: 5858173
    Abstract: A process for the manufacture of a paper having improved grease and water resistance, yet facilitating recycling of the paper is achieved by applying a recyclable plastic coating to a paper making machine.
    Type: Grant
    Filed: May 31, 1995
    Date of Patent: January 12, 1999
    Assignee: Tim-Bar Corporation
    Inventor: Charles W. Propst, Jr.