Patents by Inventor Handel D. Bennett

Handel D. Bennett 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: 20240043581
    Abstract: A process for producing an olefin polymer employs a gas phase polymerization reactor in fluid communication with a vent column and a product discharge system. The discharge system can include first and second pairs of lock hoppers, where each pair includes an upstream lock hopper connected by a valve to the reactor and a downstream lock hopper connected by a valve to the upstream lock hopper and by a further valve to a product recovery system, and where a first cross-tie can be provided between the upstream lock hoppers of the first and second pairs of lock hoppers and a second cross-tie can be provided between the downstream lock hoppers of the first and second pairs of lock hoppers. Upon reaching the vent column's maximum removal capacity, additional gas can be removed from the reactor by reducing the frequency of opening the second cross-tie between the downstream lock hoppers.
    Type: Application
    Filed: February 25, 2022
    Publication date: February 8, 2024
    Inventors: Nathaniel B. GUY, Stacy N. OLALEYE, Michael D. LUCAS, Handel D. BENNETT, David T. LAKIN, Benjamin J. OHRAN, Aaron C. MCGINNIS
  • Patent number: 11767384
    Abstract: Polyethylene copolymers with a structure that provides improved film properties are provided. The copolymers can have a density of about 0.905 to about 0.911 g/cm3. The copolymers can also have a DRI/I2 ratio of about 0.0008 to about 0.060, an I2 value of about 0.6 to about 3.8 dg/min, and an I21 value of about 8 to about 57 dg/min. The copolymers having those properties can be produced by introducing ethylene and at least one other olefin comonomer to a single reactor at a comonomer/ethylene mole ratio of about 0.02 to about 0.03 and polymerizing at a temperature of about 76.7° C. to about 80.6° C. and a pressure of about 1,724 kPa to about 2,413 kPa. The copolymers can be used to make films having a 21 mol % O2 transmission rate of about 150 to about 200 cc/100 in2/24 hr. and hot tack seal initiation temperatures of about 65° C. to 80° C.
    Type: Grant
    Filed: November 6, 2020
    Date of Patent: September 26, 2023
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Porter C. Shannon, Handel D. Bennett, Nathaniel B. Guy, Daniel G. O'Neil, James L. Schulze, Michael G. Tribo
  • Patent number: 11618791
    Abstract: A method of producing a supported catalyst includes introducing a dissolved catalyst solution into a catalyst mix vessel, and after introducing the dissolved catalyst solution into the catalyst mix vessel, introducing a porous support material into the catalyst mix vessel. The catalyst mix vessel is then operated to contact the dissolved catalyst solution on the porous support material and thereby generate the supported catalyst, and the supported catalyst is discharged from the catalyst mix vessel.
    Type: Grant
    Filed: October 23, 2020
    Date of Patent: April 4, 2023
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Brian R. Berg, Handel D. Bennett, Chi-I Kuo, Robert L. Griffin, Chelsey M. Broussard, Bruce J. Savatsky
  • Patent number: 11492422
    Abstract: A process for producing an olefin polymer employs a gas phase polymerization reactor having a product discharge system comprising first and second pairs of lock hoppers, wherein each pair comprises an upstream lock hopper connected by valve means to the reactor and a downstream lock hopper connected by valve means to the upstream lock hopper and by further valve means to a product recovery system, and wherein a first cross-tie is provided between the upstream lock hoppers of the first and second pairs of lock hoppers and a second cross-tie is provided between the downstream lock hoppers of the first and second pairs of lock hoppers. Operation of the second cross-tie during product removal cycles is controlled in accordance with reactor pressure.
    Type: Grant
    Filed: November 19, 2020
    Date of Patent: November 8, 2022
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Michael D. Lucas, Handel D. Bennett, David T. Lakin, Aaron C. McGinnis, Benjamin J. Ohran, David J. Sandell
  • Publication number: 20210155723
    Abstract: A method of producing a supported catalyst includes introducing a dissolved catalyst solution into a catalyst mix vessel, and after introducing the dissolved catalyst solution into the catalyst mix vessel, introducing a porous support material into the catalyst mix vessel. The catalyst mix vessel is then operated to contact the dissolved catalyst solution on the porous support material and thereby generate the supported catalyst, and the supported catalyst is discharged from the catalyst mix vessel.
    Type: Application
    Filed: October 23, 2020
    Publication date: May 27, 2021
    Inventors: Brian R. Berg, Handel D. Bennett, Chi-I Kuo, Robert L. Griffin, Chelsey M. Broussard, Bruce J. Savatsky
  • Publication number: 20210147589
    Abstract: Polyethylene copolymers with a structure that provides improved film properties are provided. The copolymers can have a density of about 0.905 to about 0.911 g/cm3. The copolymers can also have a DRI/I2 ratio of about 0.0008 to about 0.060, an I2 value of about 0.6 to about 3.8 dg/min, and an I21 value of about 8 to about 57 dg/min. The copolymers having those properties can be produced by introducing ethylene and at least one other olefin comonomer to a single reactor at a comonomer/ethylene mole ratio of about 0.02 to about 0.03 and polymerizing at a temperature of about 76.7° C. to about 80.6° C. and a pressure of about 1,724 kPa to about 2,413 kPa. The copolymers can be used to make films having a 21 mol % O2 transmission rate of about 150 to about 200 cc/100 in2/24 hr. and hot tack seal initiation temperatures of about 65° C. to 80° C.
    Type: Application
    Filed: November 6, 2020
    Publication date: May 20, 2021
    Inventors: Porter C. Shannon, Handel D. Bennett, Nathaniel B. Guy, Daniel G. O'Neil, James L. Schulze, Michael G. Tribo
  • Publication number: 20210079126
    Abstract: A process for producing an olefin polymer employs a gas phase polymerization reactor having a product discharge system comprising first and second pairs of lock hoppers, wherein each pair comprises an upstream lock hopper connected by valve means to the reactor and a downstream lock hopper connected by valve means to the upstream lock hopper and by further valve means to a product recovery system, and wherein a first cross-tie is provided between the upstream lock hoppers of the first and second pairs of lock hoppers and a second cross-tie is provided between the downstream lock hoppers of the first and second pairs of lock hoppers. Operation of the second cross-tie during product removal cycles is controlled in accordance with reactor pressure.
    Type: Application
    Filed: November 19, 2020
    Publication date: March 18, 2021
    Inventors: Michael D. Lucas, Handel D. Bennett, David T. Lakin, Aaron C. McGinnis, Benjamin J. Ohran, David J. Sandell