Patents by Inventor Douglas C Comrie

Douglas C Comrie 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: 11732888
    Abstract: Sorbent compositions containing calcium and iodine are added to coal to mitigate the release of mercury and/or other harmful elements into the environment during combustion of coal containing natural levels of mercury.
    Type: Grant
    Filed: March 26, 2021
    Date of Patent: August 22, 2023
    Assignee: NOX II, LTD.
    Inventor: Douglas C. Comrie
  • Patent number: 11732889
    Abstract: Sorbent components containing halogen, calcium, alumina, and silica are used in combination during coal combustion to produce environmental benefits. Sorbents such as calcium bromide are added to the coal ahead of combustion and other components are added into the flame or downstream of the flame, preferably at minimum temperatures to assure complete formation of the refractory structures that result in various advantages of the methods. When used together, the components reduce emissions of elemental and oxidized mercury; increase the level of Hg, As, Pb, and/or Cl in the coal ash; decrease the levels of leachable heavy metals (such as Hg) in the ash, preferably to levels below the detectable limits; and make a highly cementitious ash product.
    Type: Grant
    Filed: July 8, 2021
    Date of Patent: August 22, 2023
    Assignee: NOx II, Ltd.
    Inventor: Douglas C. Comrie
  • Publication number: 20210332977
    Abstract: Sorbent components containing halogen, calcium, alumina, and silica are used in combination during coal combustion to produce environmental benefits. Sorbents such as calcium bromide are added to the coal ahead of combustion and other components are added into the flame or downstream of the flame, preferably at minimum temperatures to assure complete formation of the refractory structures that result in various advantages of the methods. When used together, the components reduce emissions of elemental and oxidized mercury; increase the level of Hg, As, Pb, and/or Cl in the coal ash; decrease the levels of leachable heavy metals (such as Hg) in the ash, preferably to levels below the detectable limits; and make a highly cementitious ash product.
    Type: Application
    Filed: July 8, 2021
    Publication date: October 28, 2021
    Applicant: NOx II, Ltd.
    Inventor: Douglas C. COMRIE
  • Publication number: 20210239318
    Abstract: Sorbent compositions containing calcium and iodine are added to coal to mitigate the release of mercury and/or other harmful elements into the environment during combustion of coal containing natural levels of mercury.
    Type: Application
    Filed: March 26, 2021
    Publication date: August 5, 2021
    Applicant: NOx II, Ltd.
    Inventor: Douglas C. COMRIE
  • Patent number: 11060723
    Abstract: Sorbent components containing halogen, calcium, alumina, and silica are used in combination during coal combustion to produce environmental benefits. Sorbents such as calcium bromide are added to the coal ahead of combustion and other components are added into the flame or downstream of the flame, preferably at minimum temperatures to assure complete formation of the refractory structures that result in various advantages of the methods. When used together, the components reduce emissions of elemental and oxidized mercury; increase the level of Hg, As, Pb, and/or Cl in the coal ash; decrease the levels of leachable heavy metals (such as Hg) in the ash, preferably to levels below the detectable limits; and make a highly cementitious ash product.
    Type: Grant
    Filed: April 23, 2020
    Date of Patent: July 13, 2021
    Assignee: NOx II, Ltd.
    Inventor: Douglas C. Comrie
  • Patent number: 10962224
    Abstract: Sorbent compositions containing calcium and iodine are added to coal to mitigate the release of mercury and/or other harmful elements into the environment during combustion of coal containing natural levels of mercury.
    Type: Grant
    Filed: April 9, 2020
    Date of Patent: March 30, 2021
    Assignee: NOx II, Ltd.
    Inventor: Douglas C. Comrie
  • Publication number: 20200248902
    Abstract: Sorbent components containing halogen, calcium, alumina, and silica are used in combination during coal combustion to produce environmental benefits. Sorbents such as calcium bromide are added to the coal ahead of combustion and other components are added into the flame or downstream of the flame, preferably at minimum temperatures to assure complete formation of the refractory structures that result in various advantages of the methods. When used together, the components reduce emissions of elemental and oxidized mercury; increase the level of Hg, As, Pb, and/or Cl in the coal ash; decrease the levels of leachable heavy metals (such as Hg) in the ash, preferably to levels below the detectable limits; and make a highly cementitious ash product.
    Type: Application
    Filed: April 23, 2020
    Publication date: August 6, 2020
    Applicant: NOx II, Ltd.
    Inventor: Douglas C. COMRIE
  • Publication number: 20200240632
    Abstract: Sorbent compositions containing calcium and iodine are added to coal to mitigate the release of mercury and/or other harmful elements into the environment during combustion of coal containing natural levels of mercury.
    Type: Application
    Filed: April 9, 2020
    Publication date: July 30, 2020
    Applicant: NOx II, Ltd.
    Inventor: Douglas C. COMRIE
  • Patent number: 10670265
    Abstract: Sorbent components containing halogen, calcium, alumina, and silica are used in combination during coal combustion to produce environmental benefits. Sorbents such as calcium bromide are added to the coal ahead of combustion and other components are added into the flame or downstream of the flame, preferably at minimum temperatures to assure complete formation of the refractory structures that result in various advantages of the methods. When used together, the components reduce emissions of elemental and oxidized mercury; increase the level of Hg, As, Pb, and/or Cl in the coal ash; decrease the levels of leachable heavy metals (such as Hg) in the ash, preferably to levels below the detectable limits; and make a highly cementitious ash product.
    Type: Grant
    Filed: December 4, 2018
    Date of Patent: June 2, 2020
    Assignee: NOx II, Ltd.
    Inventor: Douglas C. Comrie
  • Patent number: 10641483
    Abstract: Sorbent compositions containing calcium and iodine are added to coal to mitigate the release of mercury and/or other harmful elements into the environment during combustion of coal containing natural levels of mercury.
    Type: Grant
    Filed: November 30, 2018
    Date of Patent: May 5, 2020
    Assignee: NOx II, Ltd.
    Inventor: Douglas C. Comrie
  • Patent number: 10612779
    Abstract: Sorbent compositions containing halogen and either nitrates or nitrites are added to coal to mitigate the release of mercury and/or other harmful elements into the environment during combustion of coal containing natural levels of mercury.
    Type: Grant
    Filed: April 4, 2018
    Date of Patent: April 7, 2020
    Assignee: NOx II, Ltd.
    Inventor: Douglas C. Comrie
  • Patent number: 10359192
    Abstract: Sorbent components containing halogen, calcium, alumina, and silica are used in combination during coal combustion to produce environmental benefits. Sorbents such as calcium bromide are added to the coal ahead of combustion and other components are added into the flame or downstream of the flame, preferably at minimum temperatures to assure complete formation of the refractory structures that result in various advantages of the methods. When used together, the components reduce emissions of elemental and oxidized mercury; increase the level of Hg, As, Pb, and/or Cl in the coal ash; decrease the levels of leachable heavy metals (such as Hg) in the ash, preferably to levels below the detectable limits; and make a highly cementitious ash product.
    Type: Grant
    Filed: October 24, 2017
    Date of Patent: July 23, 2019
    Assignee: NOx II, Ltd.
    Inventor: Douglas C. Comrie
  • Publication number: 20190101286
    Abstract: Sorbent components containing halogen, calcium, alumina, and silica are used in combination during coal combustion to produce environmental benefits. Sorbents such as calcium bromide are added to the coal ahead of combustion and other components are added into the flame or downstream of the flame, preferably at minimum temperatures to assure complete formation of the refractory structures that result in various advantages of the methods. When used together, the components reduce emissions of elemental and oxidized mercury; increase the level of Hg, As, Pb, and/or Cl in the coal ash; decrease the levels of leachable heavy metals (such as Hg) in the ash, preferably to levels below the detectable limits; and make a highly cementitious ash product.
    Type: Application
    Filed: December 4, 2018
    Publication date: April 4, 2019
    Inventor: Douglas C. COMRIE
  • Publication number: 20190093883
    Abstract: Sorbent compositions containing calcium and iodine are added to coal to mitigate the release of mercury and/or other harmful elements into the environment during combustion of coal containing natural levels of mercury.
    Type: Application
    Filed: November 30, 2018
    Publication date: March 28, 2019
    Inventor: Douglas C. COMRIE
  • Publication number: 20180224121
    Abstract: Sorbent compositions containing halogen and either nitrates or nitrites are added to coal to mitigate the release of mercury and/or other harmful elements into the environment during combustion of coal containing natural levels of mercury.
    Type: Application
    Filed: April 4, 2018
    Publication date: August 9, 2018
    Inventor: Douglas C. Comrie
  • Patent number: 9945557
    Abstract: Sorbent compositions containing iodine are added to coal to mitigate the release of mercury and/or other harmful elements into the environment during combustion of coal containing natural levels of mercury.
    Type: Grant
    Filed: June 27, 2017
    Date of Patent: April 17, 2018
    Assignee: NOx II, Ltd.
    Inventor: Douglas C. Comrie
  • Publication number: 20180045408
    Abstract: Sorbent components containing halogen, calcium, alumina, and silica are used in combination during coal combustion to produce environmental benefits. Sorbents such as calcium bromide are added to the coal ahead of combustion and other components are added into the flame or downstream of the flame, preferably at minimum temperatures to assure complete formation of the refractory structures that result in various advantages of the methods. When used together, the components reduce emissions of elemental and oxidized mercury; increase the level of Hg, As, Pb, and/or Cl in the coal ash; decrease the levels of leachable heavy metals (such as Hg) in the ash, preferably to levels below the detectable limits; and make a highly cementitious ash product.
    Type: Application
    Filed: October 24, 2017
    Publication date: February 15, 2018
    Inventor: Douglas C. Comrie
  • Patent number: 9822973
    Abstract: Sorbent components containing halogen, calcium, alumina, and silica are used in combination during coal combustion to produce environmental benefits. Sorbents such as calcium bromide are added to the coal ahead of combustion and other components are added into the flame or downstream of the flame, preferably at minimum temperatures to assure complete formation of the refractory structures that result in various advantages of the methods. When used together, the components reduce emissions of elemental and oxidized mercury; increase the level of Hg, As, Pb, and/or Cl in the coal ash; decrease the levels of leachable heavy metals (such as Hg) in the ash, preferably to levels below the detectable limits; and make a highly cementitious ash product.
    Type: Grant
    Filed: July 20, 2016
    Date of Patent: November 21, 2017
    Assignee: NOx II, Ltd.
    Inventor: Douglas C. Comrie
  • Publication number: 20170292700
    Abstract: Sorbent compositions containing iodine are added to coal to mitigate the release of mercury and/or other harmful elements into the environment during combustion of coal containing natural levels of mercury.
    Type: Application
    Filed: June 27, 2017
    Publication date: October 12, 2017
    Inventor: Douglas C. Comrie
  • Patent number: 9702554
    Abstract: Sorbent compositions containing iodine are added to coal to mitigate the release of mercury and/or other harmful elements into the environment during combustion of coal containing natural levels of mercury.
    Type: Grant
    Filed: October 7, 2015
    Date of Patent: July 11, 2017
    Assignee: NOx II, Ltd.
    Inventor: Douglas C. Comrie