Patents by Inventor Darrell Hollis

Darrell Hollis 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).

  • 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: 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: 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: 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
  • 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
  • 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
  • Publication number: 20160012703
    Abstract: Disclosed is a trap including a status LED configured to indicate a trap status, a door sensor configured to indicate a door status, and a status button, configured to: 1) wake a micro controller such that the telemetry-enabled trap can be registered with a telemetry system, and 2) cause the status LED to indicate at least the trap status and the door status. Also disclosed is a method for monitoring the trap. The method includes receiving GPS data, monitoring the GPS data for valid positional information, and receiving an event message from a trap tracker module.
    Type: Application
    Filed: March 24, 2015
    Publication date: January 14, 2016
    Inventors: Todd Moran, Darrell Hollis, Frank Bowers, Leo Desjardins, Michael Cruse, Kevin Keegan, Bret Warren
  • Patent number: 9015987
    Abstract: Disclosed is a trap including a status LED configured to indicate a trap status, a door sensor configured to indicate a door status, and a status button, configured to: 1) wake a micro controller such that the telemetry-enabled trap can be registered with a telemetry system, and 2) cause the status LED to indicate at least the trap status and the door status. Also disclosed is a method for monitoring the trap. The method includes receiving GPS data, monitoring the GPS data for valid positional information, and receiving an event message from a trap tracker module.
    Type: Grant
    Filed: December 28, 2008
    Date of Patent: April 28, 2015
    Assignee: New Frequency, Inc.
    Inventors: Todd Moran, Darrell Hollis, Frank Bowers, Leo Desjardins, Michael Cruse, Kevin Keegan, Bret Warren
  • Patent number: 6765191
    Abstract: The disclosed roller switch has a roller, a flag arm, and a photoelectric detector. The roller is connected to the flag arm and vertical movement of the roller causes the flag arm to move. The movement of the flag arm causes the photoelectric detector to send a signal. The signal may be used to measure the length of a material passing under the roller. The inventive roller switch has a pair of flag arms, and the roller is mounted on a shaft extending between the pair of flag arms. By providing a pair of flag arms connected by the roller, the roller switch is more robust and durable. The roller switch is also capable of pivoting across a conveyor belt.
    Type: Grant
    Filed: August 20, 2001
    Date of Patent: July 20, 2004
    Assignee: The Goodyear Tire & Rubber Company
    Inventors: Brian Darrell Hollis, Robert Albert Lammlein, Jr., Thomas Alan Murray, Raymond Patrick Eckman, William George Burton
  • Publication number: 20030034440
    Abstract: The disclosed roller switch has a roller, a flag arm, and a photoelectric detector. The roller is connected to the flag arm and vertical movement of the roller causes the flag arm to move. The movement of the flag arm causes the photoelectric detector to send a signal. The signal may be used to measure the length of a material passing under the roller. The inventive roller switch has a pair of flag arms, and the roller is mounted on a shaft extending between the pair of flag arms. By providing a pair of flag arms connected by the roller, the roller switch is more robust and durable. The roller switch is also capable of pivoting across a conveyor belt.
    Type: Application
    Filed: August 20, 2001
    Publication date: February 20, 2003
    Inventors: Brian Darrell Hollis, Robert Albert Lammlein, Thomas Alan Murray, Raymond Patrick Eckman, William George Burton