Patents by Inventor Brian CALDERWOOD

Brian CALDERWOOD 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: 12180133
    Abstract: A method of producing carbon tetrachloride includes providing a chloromethanes stream, combining the chloromethanes stream with chlorine and additional carbon tetrachloride to form a reaction mixture, wherein the reaction mixture includes at least stoichiometric levels of chlorine, introducing electromagnetic radiation to the reaction mixture and subjecting the reaction mixture to suitable reaction conditions to form product carbon tetrachloride, and collecting a product stream including the product carbon tetrachloride.
    Type: Grant
    Filed: October 3, 2023
    Date of Patent: December 31, 2024
    Assignee: Occidental Chemical Corporation
    Inventors: Robert L. Zeller, III, Darrell G. Hollis, Keith S. Kramer, Brian Calderwood, Rodney L. Klausmeyer, John L. Dawkins
  • Publication number: 20240391856
    Abstract: A method of producing carbon tetrachloride, the method comprising the step of reacting chlorine with chloroform in the presence of electromagnetic radiation within a reaction mixture that includes the chlorine, the chloroform, and carbon tetrachloride, where the concentration of chloroform is less than 5000 ppm by weight relative to the weight of the reaction mixture, where the reaction mixture includes at least stoichiometric levels of chlorine relative to chloroform, where the electromagnetic radiation creates chloride radicals, and where the reaction mixture is well mixed.
    Type: Application
    Filed: August 2, 2024
    Publication date: November 28, 2024
    Inventors: Robert L. ZELLER, Darrell HOLLIS, Keith S. KRAMER, Brian CALDERWOOD, Rodney L. KLAUSMEYER
  • Patent number: 12054444
    Abstract: A method of producing carbon tetrachloride, the method comprising the step of reacting chlorine with chloroform in the presence of electromagnetic radiation within a reaction mixture that includes the chlorine, the chloroform, and carbon tetrachloride, where the concentration of chloroform is less than 5000 ppm by weight relative to the weight of the reaction mixture, where the reaction mixture includes at least stoichiometric levels of chlorine relative to chloroform, where the electromagnetic radiation creates chloride radicals, and where the reaction mixture is well mixed.
    Type: Grant
    Filed: February 19, 2023
    Date of Patent: August 6, 2024
    Assignee: Occidental Chemical Corporation
    Inventors: Robert L. Zeller, Darrell Hollis, Keith S. Kramer, Brian Calderwood, Rodney L. Klausmeyer
  • Publication number: 20240208886
    Abstract: A process of the type for producing 1,1,1,2,3-pentachloropropane by introducing 1,1,1,3-tetrachloropropane, chlorine, and Lewis acid catalyst, optionally in the presence of carbon tetrachloride, the improvement comprising introducing the Lewis acid as a slurry within a chlorinated hydrocarbon.
    Type: Application
    Filed: March 5, 2024
    Publication date: June 27, 2024
    Inventors: John L. DAWKINS, Darrell HOLLIS, Keith S. KRAMER, Brian CALDERWOOD, Michael A. GARMON
  • Patent number: 11945761
    Abstract: A process of the type for producing 1,1,1,2,3-pentachloropropane by introducing 1,1,1,3-tetrachloropropane, chlorine, and Lewis acid catalyst, optionally in the presence of carbon tetrachloride, the improvement comprising introducing the Lewis acid as a slurry within a chlorinated hydrocarbon.
    Type: Grant
    Filed: July 24, 2017
    Date of Patent: April 2, 2024
    Assignee: OCCIDENTAL CHEMICAL CORPORATION
    Inventors: John L. Dawkins, Darrell Hollis, Keith S. Kramer, Brian Calderwood, Michael A. Garmon
  • Publication number: 20240025823
    Abstract: A method of producing carbon tetrachloride includes providing a chloromethanes stream, combining the chloromethanes stream with chlorine and additional carbon tetrachloride to form a reaction mixture, wherein the reaction mixture includes at least stoichiometric levels of chlorine, introducing electromagnetic radiation to the reaction mixture and subjecting the reaction mixture to suitable reaction conditions to form product carbon tetrachloride, and collecting a product stream including the product carbon tetrachloride.
    Type: Application
    Filed: October 3, 2023
    Publication date: January 25, 2024
    Inventors: Robert L. ZELLER, III, Darrell G. HOLLIS, Keith S. KRAMER, Brian CALDERWOOD, Rodney L. KLAUSMEYER, John L. DAWKINS
  • Patent number: 11780792
    Abstract: A method of producing carbon tetrachloride includes providing a chloromethanes stream, combining the chloromethanes stream with chlorine and additional carbon tetrachloride to form a reaction mixture, wherein the reaction mixture includes at least stoichiometric levels of chlorine, introducing electromagnetic radiation to the reaction mixture and subjecting the reaction mixture to suitable reaction conditions to form product carbon tetrachloride, and collecting a product stream including the product carbon tetrachloride.
    Type: Grant
    Filed: January 10, 2020
    Date of Patent: October 10, 2023
    Assignee: Occidental Chemical Corporation
    Inventors: Robert L. Zeller, III, Darrell G. Hollis, Keith S. Kramer, Brian Calderwood, Rodney L. Klausmeyer, John L. Dawkins
  • Publication number: 20230202952
    Abstract: A method of producing carbon tetrachloride, the method comprising the step of reacting chlorine with chloroform in the presence of electromagnetic radiation within a reaction mixture that includes the chlorine, the chloroform, and carbon tetrachloride, where the concentration of chloroform is less than 5000 ppm by weight relative to the weight of the reaction mixture, where the reaction mixture includes at least stoichiometric levels of chlorine relative to chloroform, where the electromagnetic radiation creates chloride radicals, and where the reaction mixture is well mixed.
    Type: Application
    Filed: February 19, 2023
    Publication date: June 29, 2023
    Inventors: Robert L. ZELLER, Darrell HOLLIS, Keith S. KRAMER, Brian CALDERWOOD, Rodney L. KLAUSMEYER
  • Patent number: 11584703
    Abstract: A method of producing carbon tetrachloride, the method comprising the step of reacting chlorine with chloroform in the presence of electromagnetic radiation within a reaction mixture that includes the chlorine, the chloroform, and carbon tetrachloride, where the concentration of chloroform is less than 5000 ppm by weight relative to the weight of the reaction mixture, where the reaction mixture includes at least stoichiometric levels of chlorine relative to chloroform, where the electromagnetic radiation creates chloride radicals, and where the reaction mixture is well mixed.
    Type: Grant
    Filed: September 28, 2020
    Date of Patent: February 21, 2023
    Assignee: OCCIDENTAL CHEMICAL CORPORATION
    Inventors: Robert L. Zeller, Darrell Hollis, Keith S. Kramer, Brian Calderwood, Rodney L. Klausmeyer
  • Publication number: 20220119326
    Abstract: A method of producing carbon tetrachloride includes providing a chloromethanes stream, combining the chloromethanes stream with chlorine and additional carbon tetrachloride to form a reaction mixture, wherein the reaction mixture includes at least stoichiometric levels of chlorine, introducing electromagnetic radiation to the reaction mixture and subjecting the reaction mixture to suitable reaction conditions to form product carbon tetrachloride, and collecting a product stream including the product carbon tetrachloride.
    Type: Application
    Filed: January 10, 2020
    Publication date: April 21, 2022
    Inventors: Robert L. ZELLER, III, Darrell G. HOLLIS, Keith S. KRAMER, Brian CALDERWOOD, Rodney L. KLAUSMEYER, John L. DAWKINS
  • Publication number: 20210355052
    Abstract: A process of the type for producing 1,1,1,2,3-pentachloropropane by introducing 1,1,1,3-tetrachloropropane, chlorine, and Lewis acid catalyst, optionally in the presence of carbon tetrachloride, the improvement comprising introducing the Lewis acid as a slurry within a chlorinated hydrocarbon.
    Type: Application
    Filed: July 24, 2017
    Publication date: November 18, 2021
    Inventors: John L. DAWKINS, Darrell HOLLIS, Keith S. KRAMER, Brian CALDERWOOD, Michael A. GARMON
  • Publication number: 20210009491
    Abstract: A method of producing carbon tetrachloride, the method comprising the step of reacting chlorine with chloroform in the presence of electromagnetic radiation within a reaction mixture that includes the chlorine, the chloroform, and carbon tetrachloride, where the concentration of chloroform is less than 5000 ppm by weight relative to the weight of the reaction mixture, where the reaction mixture includes at least stoichiometric levels of chlorine relative to chloroform, where the electromagnetic radiation creates chloride radicals, and where the reaction mixture is well mixed.
    Type: Application
    Filed: September 28, 2020
    Publication date: January 14, 2021
    Inventors: Robert L. ZELLER, Darrell HOLLIS, Keith S. KRAMER, Brian CALDERWOOD, Rodney L. KLAUSMEYER
  • Patent number: 10787404
    Abstract: A process of the type for producing chlorinated propanes by reacting carbon tetrachloride with ethylene within a tank reactor that includes a liquid reaction mixture and a headspace above the reaction mixture wherein ethylene gas diffuses from the liquid reaction mixture into the headspace while agitating the reaction mixture, the improvement comprising transferring ethylene within the headspace back into the reaction mixture through a conduit within the mixing device that agitates the reaction mixture.
    Type: Grant
    Filed: July 24, 2017
    Date of Patent: September 29, 2020
    Assignee: Occidental Chemical Corporation
    Inventors: John L Dawkins, Darrell Hollis, Keith S. Kramer, Brian Calderwood
  • Patent number: 10787405
    Abstract: A method of producing carbon tetrachloride, the method comprising the step of reacting chlorine with chloroform in the presence of electromagnetic radiation within a reaction mixture that includes the chlorine, the chloroform, and carbon tetrachloride, where the concentration of chloroform is less than 5000 ppm by weight relative to the weight of the reaction mixture, where the reaction mixture includes at least stoichiometric levels of chlorine relative to chloroform, where the electromagnetic radiation creates chloride radicals, and where the reaction mixture is well mixed.
    Type: Grant
    Filed: June 30, 2017
    Date of Patent: September 29, 2020
    Assignee: Occidental Chemical Corporation
    Inventors: Robert L. Zeller, Darrell Hollis, Keith S. Kramer, Brian Calderwood, Rodney L. Klausmeyer
  • Publication number: 20190308918
    Abstract: A method of producing carbon tetrachloride, the method comprising the step of reacting chlorine with chloroform in the presence of electromagnetic radiation within a reaction mixture that includes the chlorine, the chloroform, and carbon tetrachloride, where the concentration of chloroform is less than 5000 ppm by weight relative to the weight of the reaction mixture, where the reaction mixture includes at least stoichiometric levels of chlorine relative to chloroform, where the electromagnetic radiation creates chloride radicals, and where the reaction mixture is well mixed.
    Type: Application
    Filed: June 30, 2017
    Publication date: October 10, 2019
    Inventors: Robert L. ZELLER, Darrell HOLLIS, Keith S. KRAMER, Brian CALDERWOOD, Rodney L. KLAUSMEYER
  • Publication number: 20190284118
    Abstract: A process of the type for producing chlorinated propanes by reacting carbon tetrachloride with ethylene within a tank reactor that includes a liquid reaction mixture and a headspace above the reaction mixture wherein ethylene gas diffuses from the liquid reaction mixture into the headspace while agitating the reaction mixture, the improvement comprising transferring ethylene within the headspace back into the reaction mixture through a conduit within the mixing device that agitates the reaction mixture.
    Type: Application
    Filed: July 24, 2017
    Publication date: September 19, 2019
    Inventors: John L DAWKINS, Darrell HOLLIS, Keith S. KRAMER, Brian CALDERWOOD