Patents by Inventor Thomas E. McElwain

Thomas E. McElwain 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).

  • Methods of Producing Carbon Blacks from Low-Yielding Feedstocks and Products Made from Same
    Publication number: 20250388758
    Abstract: Methods to produce carbon black from low-yielding carbon black feedstocks are described. Low-yielding feedstocks are used in combination with traditional carbon black feedstocks to produce carbon black via a furnace process. Carbon blacks produced from these carbon black feedstocks are further described. The advantages achieved with the methods are further described.
    Type: Application
    Filed: September 29, 2022
    Publication date: December 25, 2025
    Inventors: David M. Matheu, Geoffrey D. Moeser, Theis F. Clarke, Thomas E. McElwain, David S. Crocker, Akshay Gopan, Frederick H. Rumpf, William M. Porteous
  • Methods of Producing Carbon Blacks from Low-Yielding Feedstocks and Products Made from Same
    Publication number: 20250115767
    Abstract: Methods to produce carbon black from low-yielding carbon black feedstocks are described. Carbon blacks produced from these carbon black feedstocks are further described. The advantages achieved with the methods are further described.
    Type: Application
    Filed: September 29, 2022
    Publication date: April 10, 2025
    Inventors: David M. Matheu, Geoffrey D. Moeser, Theis F. Clarke, Thomas E. McElwain, David S. Crocker, Akshay Gopan, Frederick H. Rumpf, William M. Porteous
  • Methods of Producing Carbon Blacks from Low-Yielding Feedstocks and Products Made from Same Utilizing Plasma or Electrically Heated Processes
    Publication number: 20250115766
    Abstract: Methods to produce carbon black from low-yielding carbon black feedstocks are described using a process that involves the use of electrical energy to cause formation of carbon black from a carbon black feedstock(s). Carbon blacks produced from these carbon black feedstocks are further described. The advantages achieved with the methods are further described.
    Type: Application
    Filed: January 18, 2023
    Publication date: April 10, 2025
    Inventors: David M. Matheu, Geoffrey D. Moeser, Theis F. Clarke, Thomas E. McElwain, David S. Crocker, Akshay Gopan, Frederick H. Rumpf, William M. Porteous
  • Coating compositions comprising high t-area carbon products
    Patent number: 6645287
    Abstract: The present invention discloses coating compositions comprising a liquid vehicle and a carbon product having a t-area greater than or equal to 400 m2/g. In addition, the present invention discloses coating compositions comprising a liquid vehicle and a modified carbon product having a t-area greater than or equal to 350 m2/g, wherein the modified carbon product comprises a carbon product having attached at least one organic group.
    Type: Grant
    Filed: April 27, 2001
    Date of Patent: November 11, 2003
    Assignee: Cabot Corporation
    Inventors: Lang H. Nguyen, Thomas E. McElwain, Samuel N. Shields, Jr., John F. Nagel, David D. Smith, Jameel Menashi
  • Coating compositions comprising high t-area carbon products
    Publication number: 20020189498
    Abstract: The present invention discloses coating compositions comprising a liquid vehicle and a carbon product having a t-area greater than or equal to 400 m2/g. In addition, the present invention discloses coating compositions comprising a liquid vehicle and a modified carbon product having a t-area greater than or equal to 350 m2/g, wherein the modified carbon product comprises a carbon product having attached at least one organic group.
    Type: Application
    Filed: April 27, 2001
    Publication date: December 19, 2002
    Inventors: Lang H. Nguyen, Thomas E. McElwain, Samuel N. Shields, John F. Nagel, David D. Smith, Jameel Menashi
  • Carbon blacks
    Patent number: 5393821
    Abstract: Carbon blacks having a CTAB of greater than, or equal to, 140 m.sup.2 /g; a CDBP of greater than or equal to 115 cc/100 g; a Tint value of greater than or equal to 135%; a .DELTA.D50 of less than or equal to 50 nm; a Dmode less than or equal to 72 nm; and an Occluded Volume Index greater than or equal to 1.30 that impart superior treadwear resistance and abrasion resistance to rubber compounds. Preferably, the carbon blacks of the present invention are further characterized by having a N.sub.2 SA greater than or equal to 150 m.sup.2 /g, and less than 180 m.sup.2 /g; and a DBP of greater than or equal to 140 cc/100 g. Also disclosed are rubber compounds containing the carbon blacks which exhibit increased abrasion resistance and treadwear resistance at normally utilized loading levels. Further disclosed are rubber compounds containing the carbon blacks which exhibit increased treadwear resistance/hysteresis ratios at loading levels lower than normally utilized in the compounding of tire compounds.
    Type: Grant
    Filed: April 1, 1993
    Date of Patent: February 28, 1995
    Assignee: Cabot Corporation
    Inventors: Chiung-Huei Shieh, William A. Farr, Thomas E. McElwain, Roscoe W. Taylor, William J. Patterson, Glenn E. Denstaedt, Robert R. Juengel, Stephen G. Laube