Patents by Inventor David R. Duncan

David R. Duncan 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: 11911272
    Abstract: Various aspects of the present disclosure are directed toward apparatuses, systems, and methods that include a plurality of absorbable filaments arranged in a support structure and configured degrade within a defined time period and a membrane arranged about the plurality of absorbable filaments and configured to contain fragments of the plurality of absorbable filaments in response to a fracture or degradation of a filament.
    Type: Grant
    Filed: January 17, 2020
    Date of Patent: February 27, 2024
    Assignee: W. L. Gore & Associates, Inc.
    Inventors: Michael C. Chan, Edward H. Cully, Jeffrey B. Duncan, Byron K. Hayes, Samuel Joynson, Tom R. McDaniel, David J. Messick, Edward E. Shaw
  • Patent number: 11718855
    Abstract: A method of producing a stably transformed corn plant in a single container is demonstrated. This method allows for the automation of the transformation process and reduces labor, material, and ergonomic costs associated with traditional plant tissue culture systems.
    Type: Grant
    Filed: July 8, 2021
    Date of Patent: August 8, 2023
    Assignee: MONSANTO TECHNOLOGY, LLC
    Inventors: Anisha Akula, David R. Duncan, Brenda A. Lowe, Michael T. Mann, William L. Petersen, Jyoti R. Rout, David D. Songstad, Joel B. Wilks, Wanggen Zhang
  • Patent number: 11713465
    Abstract: The present invention provides methods for the transformation of viable explants from wheat seeds to permit production of transgenic wheat plants. The present invention also relates to methods for producing such explants and related embodiments.
    Type: Grant
    Filed: November 21, 2014
    Date of Patent: August 1, 2023
    Assignee: MONSANTO TECHNOLOGY, LLC
    Inventors: David R. Duncan, Sarah Heifner, David Kelm, Brian J. Martinell, Lorena Moeller, Anatoly Rivlin, Rebecca Rode, Xudong Ye, Ashok Shrawat, Yurong Chen
  • Publication number: 20230132009
    Abstract: The syringe includes a hollow body with at least one free-floating piston and a plunger within the body, with the piston between the plunger and a proximal end of the body. A manifold is provided lateral to the body. The manifold leads to an input/output tip. The manifold includes a front port located between the piston and the proximal end of the body and a rear port spaced from the proximal end of the body. The manifold includes at least one flow path leading from the input/output tip to at least one of the front port and/or the rear port. A first fluid fills a rear chamber distal to the piston and then the manifold is adjusted to fill second fluid into a front chamber proximal of the piston, and then the manifold is adjusted to allow sequential delivery of the second fluid and the first fluid.
    Type: Application
    Filed: November 3, 2022
    Publication date: April 27, 2023
    Inventor: David R. Duncan
  • Publication number: 20230126585
    Abstract: The syringe includes a hollow body with at least one free-floating piston and a plunger within the body, with the piston between the plunger and a proximal end of the body. A manifold is provided lateral to the body. The manifold leads to an input/output tip. The manifold includes a front port located between the piston and the proximal end of the body and a rear port spaced from the proximal end of the body. The manifold includes at least one flow path leading from the input/output tip to at least one of the front port and/or the rear port. A first fluid fills a rear chamber distal to the piston and then the manifold is adjusted to fill second fluid into a front chamber proximal of the piston, and then the manifold is adjusted to allow sequential delivery of the second fluid and the first fluid.
    Type: Application
    Filed: November 3, 2022
    Publication date: April 27, 2023
    Inventor: David R. Duncan
  • Patent number: 11491277
    Abstract: The syringe includes a hollow body with at least one free-floating piston and a plunger within the body, with the piston between the plunger and a proximal end of the body. A manifold is provided lateral to the body. The manifold leads to an input/output tip. The manifold includes a front port located between the piston and the proximal end of the body and a rear port spaced from the proximal end of the body. The manifold includes at least one flow path leading from the input/output tip to at least one of the front port and/or the rear port. A first fluid fills a rear chamber distal to the piston and then the manifold is adjusted to fill second fluid into a front chamber proximal of the piston, and then the manifold is adjusted to allow sequential delivery of the second fluid and the first fluid.
    Type: Grant
    Filed: August 12, 2019
    Date of Patent: November 8, 2022
    Assignee: MonuMedical, LLC
    Inventor: David R. Duncan
  • Publication number: 20220340916
    Abstract: The present invention provides methods for the transformation of viable explants from wheat seeds to permit production of transgenic wheat plants. The present invention also relates to methods for producing such explants and related embodiments.
    Type: Application
    Filed: November 21, 2014
    Publication date: October 27, 2022
    Inventors: David R. Duncan, Sarah Heifner, David Kelm, Brian J. Martinell, Lorena Moeller, Anatoly Rivlin, Rebecca Rode, Xudong Ye, Ashok Shrawat, Yurong Chen
  • Publication number: 20220010320
    Abstract: A method of producing a stably transformed corn plant in a single container is demonstrated. This method allows for the automation of the transformation process and reduces labor, material, and ergonomic costs associated with traditional plant tissue culture systems.
    Type: Application
    Filed: July 8, 2021
    Publication date: January 13, 2022
    Inventors: Anisha Akula, David R. Duncan, Brenda A. Lowe, Michael T. Mann, William L. Petersen, Jyoti R. Rout, David D. Songstad, Joel B. Wilks, Wanggen Zhang
  • Patent number: 11091766
    Abstract: Production of transformed plants is achieved by placing Agrobacterium-inoculated explants directly onto a medium containing selective agents for suppressing growth of Agrobacterium and killing non-transformed explant cells.
    Type: Grant
    Filed: May 11, 2018
    Date of Patent: August 17, 2021
    Assignee: Monsanto Technology LLC
    Inventors: Anisha Akula, David R. Duncan, Brenda A. Lowe, Michael T. Mann, William L. Petersen, Jyoti R. Rout, David D. Songstad, Joel B. Wilks, Wanggen Zhang
  • Publication number: 20200046900
    Abstract: The syringe includes a hollow body with at least one free-floating piston and a plunger within the body, with the piston between the plunger and a proximal end of the body. A manifold is provided lateral to the body. The manifold leads to an input/output tip. The manifold includes a front port located between the piston and the proximal end of the body and a rear port spaced from the proximal end of the body. The manifold includes at least one flow path leading from the input/output tip to at least one of the front port and/or the rear port. A first fluid fills a rear chamber distal to the piston and then the manifold is adjusted to fill second fluid into a front chamber proximal of the piston, and then the manifold is adjusted to allow sequential delivery of the second fluid and the first fluid.
    Type: Application
    Filed: August 12, 2019
    Publication date: February 13, 2020
    Inventor: David R. Duncan
  • Patent number: 10368701
    Abstract: A replaceable cartridge for a liquid master dispenser is disclosed. The replaceable cartridge includes a reservoir for containing liquid to be dispensed from the liquid master dispenser; and a personal dispenser removably coupled to the reservoir. The personal dispenser includes a receptacle for containing liquid to be dispensed from the personal dispenser; and an outlet port for discharge of the liquid from the receptacle. The personal dispenser is configured for selectively discharging the liquid contained in the receptacle from the outlet port, after the personal dispenser is removed from the reservoir. The reservoir has a cavity sized for removably receiving the personal dispenser.
    Type: Grant
    Filed: May 15, 2018
    Date of Patent: August 6, 2019
    Assignee: OP-Hygiene IP GmbH
    Inventors: Heiner Ophardt, David R. Duncan
  • Publication number: 20180273959
    Abstract: A method of producing a stably transformed corn plant in a single container is demonstrated. This method allows for the automation of the transformation process and reduces labor, material, and ergonomic costs associated with traditional plant tissue culture systems.
    Type: Application
    Filed: May 11, 2018
    Publication date: September 27, 2018
    Inventors: Anisha Akula, David R. Duncan, Brenda A. Lowe, Michael T. Mann, William L. Petersen, Jyoti R. Rout, David D. Songstad, Joel B. Wilks, Wanggen Zhang
  • Publication number: 20180255980
    Abstract: A replaceable cartridge for a liquid master dispenser is disclosed. The replaceable cartridge includes a reservoir for containing liquid to be dispensed from the liquid master dispenser; and a personal dispenser removably coupled to the reservoir. The personal dispenser includes a receptacle for containing liquid to be dispensed from the personal dispenser; and an outlet port for discharge of the liquid from the receptacle. The personal dispenser is configured for selectively discharging the liquid contained in the receptacle from the outlet port, after the personal dispenser is removed from the reservoir. The reservoir has a cavity sized for removably receiving the personal dispenser.
    Type: Application
    Filed: May 15, 2018
    Publication date: September 13, 2018
    Inventors: Heiner Ophardt, David R. Duncan
  • Patent number: 10006036
    Abstract: A method of producing a stably transformed corn plant in a single container is demonstrated. This method allows for the automation of the transformation process and reduces labor, material, and ergonomic costs associated with traditional plant tissue culture systems.
    Type: Grant
    Filed: January 16, 2015
    Date of Patent: June 26, 2018
    Assignee: Monsanto Technology LLC
    Inventors: Anisha Akula, David R. Duncan, Brenda A. Lowe, Michael T. Mann, William L. Petersen, Jyoti R. Rout, David D. Songstad, Joel B. Wilks, Wanggen Zhang
  • Patent number: 9995405
    Abstract: An insert is rotatable relative to a housing to transition the stopcock between different operational states with various different ports being open or closed. The insert includes a manifold shaft which resides within a hollow core of a hub of the housing. The openings are brought into and out of alignment with ports in the housing to cause the stopcock to transition between operational states with two or more of the ports being open or all of the ports being closed. The manifold shaft and hollow core include either detent slots or detent ribs thereon which coact together to cause the ribs to reside within the slots when the insert is rotated to one of the desired operational states, and for the ribs and slots to be out of alignment when outside of one of the desired operational states. The stopcock thus tends to snap into desired operational states.
    Type: Grant
    Filed: September 8, 2016
    Date of Patent: June 12, 2018
    Inventor: David R. Duncan
  • Patent number: 9993119
    Abstract: A liquid dispenser is disclosed. The liquid dispenser includes a reservoir for containing liquid to be dispensed; a dispenser outlet for discharge of the liquid from the reservoir; a discharge mechanism operable to discharge the liquid from the dispenser outlet when activated; and a personal dispenser removably coupled to the dispenser outlet. The personal dispenser includes a receptacle for containing the liquid discharged from the dispenser outlet; an inlet port for receiving the liquid discharged from the dispenser outlet; and an outlet port for discharge of the liquid from the receptacle.
    Type: Grant
    Filed: February 23, 2016
    Date of Patent: June 12, 2018
    Assignee: OP-Hygiene IP GmbH
    Inventors: Heiner Ophardt, David R. Duncan
  • Patent number: 9895487
    Abstract: An assembly is provided which includes an infusion device coupled to a standard medication syringe. The medication syringe may be coupled to a stopcock valve having multiple ports and to which syringes, vial adapters, infusion tubing, and multiple other items may be coupled. The infusion device includes a source of power based on a resistance force such as vacuum, spring or gas power. The infusion device converts the resistance based force to usable work in the form of a force applicator. The force applicator includes a driver section on one section of a reciprocating arm and an attachment to the power source on another section of the arm. The driver is pulled outward (excursion) to increase the size of the chamber, creating a force that tends to return the driver back inward, causing incursion. The driver can be attached removably to the syringe plunger to induce the infusion process.
    Type: Grant
    Filed: November 8, 2012
    Date of Patent: February 20, 2018
    Inventor: David R. Duncan
  • Publication number: 20170067568
    Abstract: An insert is rotatable relative to a housing to transition the stopcock between different operational states with various different ports being open or closed. The insert includes a manifold shaft which resides within a hollow core of a hub of the housing. The openings are brought into and out of alignment with ports in the housing to cause the stopcock to transition between operational states with two or more of the ports being open or all of the ports being closed. The manifold shaft and hollow core include either detent slots or detent ribs thereon which coact together to cause the ribs to reside within the slots when the insert is rotated to one of the desired operational states, and for the ribs and slots to be out of alignment when outside of one of the desired operational states. The stopcock thus tends to snap into desired operational states.
    Type: Application
    Filed: September 8, 2016
    Publication date: March 9, 2017
    Inventor: David R. Duncan
  • Patent number: 9500287
    Abstract: A valve is provided with multiple ports joining multiple fluid conduits leading between fluid sources and fluid destinations. A central hub manifold or other control element resides within a body supporting the ports, and can rotate relative to the valve body. Fluid flow paths within the central hub or other control element are selectively aligned or not aligned with the ports. The valve indicates which ports are open or closed by providing unique marks adjacent the ports corresponding with being open or closed. When the positive marks are visible, such as through windows in a rotating structure fixed to the central hub or other control element, the corresponding ports are open. When the negative marks are visible, such as through other windows in the rotating structure, the corresponding ports are closed.
    Type: Grant
    Filed: November 12, 2014
    Date of Patent: November 22, 2016
    Inventor: David R. Duncan
  • Patent number: D798080
    Type: Grant
    Filed: July 22, 2016
    Date of Patent: September 26, 2017
    Assignee: OP-Hygiene IP GmbH
    Inventors: David R. Duncan, Oriol Prat Centellas