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).
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Publication number: 20240391856Abstract: 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: ApplicationFiled: August 2, 2024Publication date: November 28, 2024Inventors: Robert L. ZELLER, Darrell HOLLIS, Keith S. KRAMER, Brian CALDERWOOD, Rodney L. KLAUSMEYER
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Patent number: 12054444Abstract: 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: GrantFiled: February 19, 2023Date of Patent: August 6, 2024Assignee: Occidental Chemical CorporationInventors: Robert L. Zeller, Darrell Hollis, Keith S. Kramer, Brian Calderwood, Rodney L. Klausmeyer
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Publication number: 20240208886Abstract: 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: ApplicationFiled: March 5, 2024Publication date: June 27, 2024Inventors: John L. DAWKINS, Darrell HOLLIS, Keith S. KRAMER, Brian CALDERWOOD, Michael A. GARMON
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Patent number: 11945761Abstract: 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: GrantFiled: July 24, 2017Date of Patent: April 2, 2024Assignee: OCCIDENTAL CHEMICAL CORPORATIONInventors: John L. Dawkins, Darrell Hollis, Keith S. Kramer, Brian Calderwood, Michael A. Garmon
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Publication number: 20230202952Abstract: 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: ApplicationFiled: February 19, 2023Publication date: June 29, 2023Inventors: Robert L. ZELLER, Darrell HOLLIS, Keith S. KRAMER, Brian CALDERWOOD, Rodney L. KLAUSMEYER
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Patent number: 11584703Abstract: 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: GrantFiled: September 28, 2020Date of Patent: February 21, 2023Assignee: OCCIDENTAL CHEMICAL CORPORATIONInventors: Robert L. Zeller, Darrell Hollis, Keith S. Kramer, Brian Calderwood, Rodney L. Klausmeyer
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Publication number: 20210355052Abstract: 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: ApplicationFiled: July 24, 2017Publication date: November 18, 2021Inventors: John L. DAWKINS, Darrell HOLLIS, Keith S. KRAMER, Brian CALDERWOOD, Michael A. GARMON
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Publication number: 20210009491Abstract: 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: ApplicationFiled: September 28, 2020Publication date: January 14, 2021Inventors: Robert L. ZELLER, Darrell HOLLIS, Keith S. KRAMER, Brian CALDERWOOD, Rodney L. KLAUSMEYER
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Patent number: 10787405Abstract: 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: GrantFiled: June 30, 2017Date of Patent: September 29, 2020Assignee: Occidental Chemical CorporationInventors: Robert L. Zeller, Darrell Hollis, Keith S. Kramer, Brian Calderwood, Rodney L. Klausmeyer
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Patent number: 10787404Abstract: 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: GrantFiled: July 24, 2017Date of Patent: September 29, 2020Assignee: Occidental Chemical CorporationInventors: John L Dawkins, Darrell Hollis, Keith S. Kramer, Brian Calderwood
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Publication number: 20190308918Abstract: 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: ApplicationFiled: June 30, 2017Publication date: October 10, 2019Inventors: Robert L. ZELLER, Darrell HOLLIS, Keith S. KRAMER, Brian CALDERWOOD, Rodney L. KLAUSMEYER
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Publication number: 20190284118Abstract: 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: ApplicationFiled: July 24, 2017Publication date: September 19, 2019Inventors: John L DAWKINS, Darrell HOLLIS, Keith S. KRAMER, Brian CALDERWOOD
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Publication number: 20160012703Abstract: 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: ApplicationFiled: March 24, 2015Publication date: January 14, 2016Inventors: Todd Moran, Darrell Hollis, Frank Bowers, Leo Desjardins, Michael Cruse, Kevin Keegan, Bret Warren
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Patent number: 9015987Abstract: 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: GrantFiled: December 28, 2008Date of Patent: April 28, 2015Assignee: New Frequency, Inc.Inventors: Todd Moran, Darrell Hollis, Frank Bowers, Leo Desjardins, Michael Cruse, Kevin Keegan, Bret Warren
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Patent number: 6765191Abstract: 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: GrantFiled: August 20, 2001Date of Patent: July 20, 2004Assignee: The Goodyear Tire & Rubber CompanyInventors: Brian Darrell Hollis, Robert Albert Lammlein, Jr., Thomas Alan Murray, Raymond Patrick Eckman, William George Burton
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Publication number: 20030034440Abstract: 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: ApplicationFiled: August 20, 2001Publication date: February 20, 2003Inventors: Brian Darrell Hollis, Robert Albert Lammlein, Thomas Alan Murray, Raymond Patrick Eckman, William George Burton