Patents by Inventor Steven G. Caldwell

Steven G. Caldwell 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: 11944953
    Abstract: Described herein are methods of forming a VOC and odor-reducing building panel. The methods include providing a substrate; applying a wet-state coating to a major surface of the substrate, the wet-state coating comprising carrier comprising water; and drying the wet-state coating, thereby evaporating at least 95 wt. % of the carrier to form a dry-state coating.
    Type: Grant
    Filed: April 27, 2021
    Date of Patent: April 2, 2024
    Assignee: AWI Licensing LLC
    Inventors: Kenneth G. Caldwell, Steven L. Masia, Gourish Sirdeshpande, Michelle X Wang
  • Patent number: 8841005
    Abstract: An article includes a working portion including cemented carbide, and a heat sink portion in thermal communication with the working portion. The heat sink portion includes a heat sink material having a thermal conductivity greater than a thermal conductivity of the cemented carbide. Also disclosed are methods of making an article including a working portion comprising cemented carbide, and a heat sink portion in thermal communication with the working portion and including a heat sink material having a thermal conductivity that is greater than a thermal conductivity of the cemented carbide. The heat sink portion conducts heat from the working portion.
    Type: Grant
    Filed: October 1, 2012
    Date of Patent: September 23, 2014
    Assignee: Kennametal Inc.
    Inventors: Prakash K. Mirchandani, Alfred J. Mosco, Eric W. Olsen, Steven G. Caldwell
  • Publication number: 20140145097
    Abstract: Various non-limiting embodiments disclosed herein generally relate to metallurgically dense radiation shields formed from bismuth alloys comprising from 10 weight percent to 60 weight percent tin that are essentially free of toxic heavy metals chosen from lead, cadmium, and uranium; and radiation attenuation devices comprising the same. Other non-limiting embodiments disclosed herein relate to methods of making metallurgically dense radiation shields comprising bismuth alloys comprising from 10 weight percent to 60 weight percent tin. Still other non-limiting embodiments herein generally relate to methods of shielding radiation-emitting devices using metallurgically dense radiation shields formed from bismuth alloys comprising from 10 weight percent to 60 weight percent tin that are essentially free of toxic heavy metals chosen from lead, cadmium, and uranium.
    Type: Application
    Filed: April 14, 2004
    Publication date: May 29, 2014
    Inventor: Steven G. Caldwell
  • Patent number: 8697258
    Abstract: An article includes a working portion including cemented carbide, and a heat sink portion in thermal communication with the working portion. The heat sink portion includes a heat sink material having a thermal conductivity greater than a thermal conductivity of the cemented carbide. Also disclosed are methods of making an article including a working portion comprising cemented carbide, and a heat sink portion in thermal communication with the working portion and including a heat sink material having a thermal conductivity that is greater than a thermal conductivity of the cemented carbide. The heat sink portion conducts heat from the working portion.
    Type: Grant
    Filed: July 14, 2011
    Date of Patent: April 15, 2014
    Assignee: Kennametal Inc.
    Inventors: Prakash K. Mirchandani, Alfred J. Mosco, Eric W. Olsen, Steven G. Caldwell
  • Publication number: 20120097456
    Abstract: The present invention relates to compositions for forming at least a portion of an earth-boring rotary drill bit. The rotary drill bit may comprise a cemented transition metal carbide composition containing at least one precipitate transition metal carbide phase and at least one binder phase. The binder phase may comprise an alloy of at least one of cobalt, iron, and nickel having a melting point less than 1350° C.
    Type: Application
    Filed: December 1, 2011
    Publication date: April 26, 2012
    Applicants: Baker Hughes Incorporated, TDY INDUSTRIES, INC.
    Inventors: Prakash K. Mirchandani, Jimmy W. Eason, James J. Oakes, James C. Westhoff, Gabriel B. Collins, John H. Stevens, Steven G. Caldwell, Alfred J. Mosco
  • Patent number: 8087324
    Abstract: The present invention relates to compositions and methods for forming a bit body for an earth-boring bit. The bit body may comprise hard particles, wherein the hard particles comprise at least one of carbide, nitride, boride, oxide and solid solutions thereof, and a binder binding together the hard particles. The binder may comprise at least one metal selected from cobalt, nickel, and iron, and, optionally, at least one melting point reducing constituent selected from a transition metal carbide in the range of 30 to 60 weight percent, boron up to 10 weight percent, silicon up to 20 weight percent, chromium up to 20 weight percent, and manganese up to 25 weight percent, wherein the weight percentages are based on the total weight of the binder.
    Type: Grant
    Filed: April 20, 2010
    Date of Patent: January 3, 2012
    Assignees: TDY Industries, Inc., Baker Hughes Incorporated
    Inventors: Jimmy W. Eason, Prakash K. Mirchandani, James J. Oakes, James C. Westhoff, Gabriel B. Collins, John H. Stevens, Steven G. Caldwell, Alfred J. Mosco
  • Publication number: 20110265623
    Abstract: An article includes a working portion including cemented carbide, and a heat sink portion in thermal communication with the working portion. The heat sink portion includes a heat sink material having a thermal conductivity greater than a thermal conductivity of the cemented carbide. Also disclosed are methods of making an article including a working portion comprising cemented carbide, and a heat sink portion in thermal communication with the working portion and including a heat sink material having a thermal conductivity that is greater than a thermal conductivity of the cemented carbide. The heat sink portion conducts heat from the working portion.
    Type: Application
    Filed: July 14, 2011
    Publication date: November 3, 2011
    Applicant: TDY Industries, Inc.
    Inventors: Prakash K. Mirchandani, Alfred J. Mosco, Eric W. Olsen, Steven G. Caldwell
  • Patent number: 8007922
    Abstract: An article includes a working portion including cemented carbide, and a heat sink portion in thermal communication with the working portion. The heat sink portion includes a heat sink material having a thermal conductivity greater than a thermal conductivity of the cemented carbide. Also disclosed are methods of making an article including a working portion comprising cemented carbide, and a heat sink portion in thermal communication with the working portion and including a heat sink material having a thermal conductivity that is greater than a thermal conductivity of the cemented carbide. The heat sink portion conducts heat from the working portion.
    Type: Grant
    Filed: October 25, 2007
    Date of Patent: August 30, 2011
    Assignee: TDY Industries, Inc
    Inventors: Prakash K. Mirchandani, Alfred J. Mosco, Eric W. Olsen, Steven G. Caldwell
  • Patent number: 8007714
    Abstract: The present invention relates to compositions and methods for forming a bit body for an earth-boring bit. The bit body may comprise hard particles, wherein the hard particles comprise at least one of carbide, nitride, boride, oxide, and solid solutions thereof, and a binder binding together the hard particles. The binder may comprise at least one metal selected from cobalt, nickel, and iron and, optionally, at least one melting point reducing constituent selected from a transition metal carbide in the range of 30 to 60 weight percent, boron up to 10 weight percent, silicon up to 20 weight percent, chromium up to 20 weight percent, and manganese up to 25 weight percent, wherein the weight percentages are based on the total weight of the binder.
    Type: Grant
    Filed: February 20, 2008
    Date of Patent: August 30, 2011
    Assignees: TDY Industries, Inc., Baker Hughes Incorporated
    Inventors: Prakash K. Mirchandani, Jimmy W. Eason, James J. Oakes, James C. Westhoff, Gabriel B. Collins, John H. Stevens, Steven G. Caldwell, Alfred J. Mosco
  • Patent number: 7954569
    Abstract: The present invention relates to compositions and methods for forming a bit body for an earth-boring bit. The bit body may comprise hard particles, wherein the hard particles comprise at least one of carbide, nitride, boride, and oxide and solid solutions thereof, and a binder binding together the hard particles. The binder may comprise at least one metal selected from cobalt, nickel, and iron, and, optionally, at least one melting point reducing constituent selected from a transition metal carbide in the range of 30 to 60 weight percent, boron up to 10 weight percent, silicon up to 20 weight percent, chromium up to 20 weight percent, and manganese up to 25 weight percent, wherein the weight percentages are based on the total weight of the binder.
    Type: Grant
    Filed: April 28, 2005
    Date of Patent: June 7, 2011
    Assignees: TDY Industries, Inc., Baker Hughes Incorporated
    Inventors: Prakash K. Mirchandani, Jimmy W. Eason, James J. Oakes, James C. Westhoff, Gabriel B. Collins, John H. Stevens, Steven G. Caldwell, Alfred J. Mosco
  • Publication number: 20100193252
    Abstract: The present invention relates to compositions and methods for forming a bit body for an earth-boring bit. The bit body may comprise hard particles, wherein the hard particles comprise at least one of carbide, nitride, boride, and oxide and solid solutions thereof, and a binder binding together the hard particles. The binder may comprise at least one metal selected from cobalt, nickel, and iron, and, optionally, at least one melting point reducing constituent selected from a transition metal carbide in the range of 30 to 60 weight percent, boron up to 10 weight percent, silicon up to 20 weight percent, chromium up to 20 weight percent, and manganese up to 25 weight percent, wherein the weight percentages are based on the total weight of the binder.
    Type: Application
    Filed: April 20, 2010
    Publication date: August 5, 2010
    Applicants: TDY INDUSTRIES, INC., BAKER HUGHES INCORPORATED
    Inventors: Prakash K. Mirchandani, Jimmy W. Eason, James J. Oakes, James C. Westhoff, Gabriel B. Collins, John H. Stevens, Steven G. Caldwell, Alfred J. Mosco
  • Publication number: 20080163723
    Abstract: The present invention relates to compositions and methods for forming a bit body for an earth-boring bit. The bit body may comprise hard particles, wherein the hard particles comprise at least one carbide, nitride, boride, and oxide and solid solutions thereof, and a binder binding together the hard particles. The binder may comprise at least one metal selected from cobalt, nickel, and iron, and, optionally, at least one melting point reducing constituent selected from a transition metal carbide in the range of 30 to 60 weight percent, boron up to 10 weight percent, silicon up to 20 weight percent, chromium up to 20 weight percent, and manganese up to 25 weight percent, wherein the weight percentages are based on the total weight of the binder.
    Type: Application
    Filed: February 20, 2008
    Publication date: July 10, 2008
    Applicants: TDY Industries Inc., Baker Hughes Incorporated
    Inventors: Prakash K. Mirchandani, Jimmy W. Eason, James J. Oakes, James C. Westhoff, Gabriel B. Collins, John H. Stevens, Steven G. Caldwell, Alfred J. Mosco
  • Publication number: 20080145686
    Abstract: An article includes a working portion including cemented carbide, and a heat sink portion in thermal communication with the working portion. The heat sink portion includes a heat sink material having a thermal conductivity greater than a thermal conductivity of the cemented carbide. Also disclosed are methods of making an article including a working portion comprising cemented carbide, and a heat sink portion in thermal communication with the working portion and including a heat sink material having a thermal conductivity that is greater than a thermal conductivity of the cemented carbide. The heat sink portion conducts heat from the working portion.
    Type: Application
    Filed: October 25, 2007
    Publication date: June 19, 2008
    Inventors: Prakash K. Mirchandani, Alfred J. Mosco, Eric W. Olsen, Steven G. Caldwell
  • Patent number: 7312466
    Abstract: Embodiments of a radiation shield are disclosed. One non-limiting embodiment of the radiation shield may comprise a first layer, a second layer, and a third layer. The first layer may include a neutron moderating material. The second layer may be adjacent the first layer and may include a neutron absorbing material. The third layer may be adjacent the second layer, and may include a photonic radiation attenuating material. At least the first layer and the second layer may be removable from the radiation shield.
    Type: Grant
    Filed: May 26, 2005
    Date of Patent: December 25, 2007
    Assignee: TDY Industries, Inc.
    Inventor: Steven G. Caldwell