Patents by Inventor Stephen C. Schweigert

Stephen C. Schweigert 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).

  • High reactivity lime hydrate and methods of manufacturing and uses thereof
    Patent number: 12168214
    Abstract: A sorbent composition with improved acid gas reactivity comprising calcium hydroxide particles is provided. In the calcium hydroxide composition, the amount of time it takes the calcium hydroxide particles to neutralize in citric acid of a mass greater than 10 times the mass of the calcium hydroxide particles is less than 10 seconds; about 90% of the calcium hydroxide particles are less than or equal to about 10 microns; and the calcium hydroxide particles have a BET surface area of about 18 m2/g or greater.
    Type: Grant
    Filed: April 4, 2019
    Date of Patent: December 17, 2024
    Assignee: Mississippi Lime Company
    Inventors: Randy J. Griffard, Mark G. DeGenova, Stephen C. Schweigert, Gerald K. Bequette, William S. Allebach, Zhichao Richard Zhang, Curtiss R. Biehn
  • High reactivity lime hydrate and methods of manufacturing and uses thereof
    Patent number: 10307728
    Abstract: A sorbent composition with improved acid gas reactivity comprising calcium hydroxide particles is provided. In the calcium hydroxide composition, about 90% percent of the calcium hydroxide particles are less than or equal to about 10 microns; the ratio of 90% of the calcium hydroxide particles below a specified size to the ratio of 10% of the calcium hydroxide particles above a specified size is less than about 8; and the calcium hydroxide particles have a BET surface area of about 18 m2/g or greater.
    Type: Grant
    Filed: November 4, 2016
    Date of Patent: June 4, 2019
    Assignee: Mississippi Lime Company
    Inventors: Randy J. Griffard, Mark G. Degenova, Stephen C. Schweigert, Gerald K. Bequette, William S. Allebach, Zhichao Richard Zhang, Curtiss R. Biehn
  • High reactivity lime hydrate and methods of manufacturing and uses thereof
    Patent number: 9517471
    Abstract: A sorbent composition with improved acid gas reactivity comprising calcium hydroxide particles is provided. In the calcium hydroxide composition, about 90% percent of the calcium hydroxide particles are less than or equal to about 10 microns; the ratio of 90% of the calcium hydroxide particles below a specified size to the ratio of 10% of the calcium hydroxide particles above a specified size is less than about 8; and the calcium hydroxide particles have a BET surface area of about 18 m2/g or greater.
    Type: Grant
    Filed: August 24, 2012
    Date of Patent: December 13, 2016
    Assignee: Mississippi Lime Company
    Inventors: Randy J. Griffard, Mark G. DeGenova, Stephen C. Schweigert, Gerald K. Bequette, William S. Allebach, Zhichao Richard Zhang, Curtiss R. Biehn