Patents by Inventor David Wetzel

David Wetzel 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: 11684930
    Abstract: A quantitative infrared chemical imaging method to determine the concentration of a desired high value product in a milling process is used as a basis to optimize the milling process by changing operational parameters, such as sieve size. In a dry milling process, the method can be used to determine the concentration of purified endosperm within heterogeneous solid particulate mixtures containing endosperm and nonendosperm botanical parts. The imaging component accommodates the analysis of particle size statistics for each component of the mixture, based upon the chemical structural characterization. Timely chemical composition and particle size analyses enables informed selection for the optimization of physical separation for the processing of granular solids. The method involves changing sieves within the sifting apparatus based on chemical imaging to provide smaller or larger screen openings to improve separation of endosperm and nonendosperm material from the ground product.
    Type: Grant
    Filed: September 27, 2018
    Date of Patent: June 27, 2023
    Inventors: David Wetzel, Mark Boatwright, Elieser Posner
  • Patent number: 11403210
    Abstract: Cash handling device simulation systems and methods store real-time updated data indicative of the operating software, hardware, and firmware of each of a plurality of physical cash handling devices. Such real-time updated data is configured for executing a simulated operation of one or more cash handling devices based at least in part on simulation input data. The simulation input data may additionally identify one or more cash handling devices for simulated operation thereof, such that the simulation system generates simulated output reflecting output generated by the one or more cash handling devices during operation thereof.
    Type: Grant
    Filed: July 17, 2020
    Date of Patent: August 2, 2022
    Assignee: G4S Retail Solutions (USA) Inc.
    Inventors: Brian McCabe, Shelliene D. Crandall, David Wetzel
  • Publication number: 20210343510
    Abstract: A quartz structure includes a protective layer comprising yttrium oxide. The quartz structure may be fabricated by: (a) receiving a quartz structure; and (b) coating the quartz structure with a protective layer comprising yttrium oxide to form a part to be used in the plasma reactor. The part has a size and shape adapted for forming a window or injector in a plasma reactor. The protective layer does not substantially change the size or shape of the quartz structure. The part may be installed in the plasma reactor at a location where, during operation, a plasma will contact or be proximate to the part.
    Type: Application
    Filed: July 16, 2021
    Publication date: November 4, 2021
    Inventors: Lin Xu, Robin Koshy, John E. Daugherty, Satish Srinivasan, David Wetzel
  • Patent number: 11087961
    Abstract: A quartz structure includes a protective layer comprising yttrium oxide. The quartz structure may be fabricated by: (a) receiving a quartz structure; and (b) coating the quartz structure with a protective layer comprising yttrium oxide to form a part to be used in the plasma reactor. The part has a size and shape adapted for forming a window or injector in a plasma reactor. The protective layer does not substantially change the size or shape of the quartz structure. The part may be installed in the plasma reactor at a location where, during operation, a plasma will contact or be proximate to the part.
    Type: Grant
    Filed: March 2, 2018
    Date of Patent: August 10, 2021
    Assignee: LAM RESEARCH CORPORATION
    Inventors: Lin Xu, Robin Koshy, John E. Daugherty, Satish Srinivasan, David Wetzel
  • Patent number: 11053478
    Abstract: A method for separating virus-like particles from a cell suspension of host cells. The virus-like particles having at least one envelope protein embedded in a lipid double membrane including at least a portion corresponding to a small envelope protein of a virus of the family Hepadnaviridae. The host cells are disrupted to obtain a first suspension. A supernatant containing the virus-like particles is separated from the first suspension. Then, an adsorbent is added to the supernatant and separated off. Then, the virus-like particles are desorbed from the adsorbent by adding a desorption buffer. A soluble calcium salt is added to a supernatant separated from the second suspension to form a precipitate, the precipitate formed is separated off and transferred to a third suspension. The virus-like particles are separated from the third suspension and purified.
    Type: Grant
    Filed: June 11, 2019
    Date of Patent: July 6, 2021
    Assignee: ARTES BIOTECHNOLOGY GMBH
    Inventors: David Wetzel, Volker Jenzelewski, Michael Piontek
  • Publication number: 20200017838
    Abstract: A method for separating virus-like particles from a cell suspension of host cells. The virus-like particles having at least one envelope protein embedded in a lipid double membrane including at least a portion corresponding to a small envelope protein of a virus of the family Hepadnaviridae. The host cells are disrupted to obtain a first suspension. A supernatant containing the virus-like particles is separated from the first suspension. Then, an adsorbent is added to the supernatant and separated off. Then, the virus-like particles are desorbed from the adsorbent by adding a desorption buffer. A soluble calcium salt is added to a supernatant separated from the second suspension to form a precipitate, the precipitate formed is separated off and transferred to a third suspension. The virus-like particles are separated from the third suspension and purified.
    Type: Application
    Filed: June 11, 2019
    Publication date: January 16, 2020
    Inventors: David WETZEL, Volker JENZELEWSKI, Michael PIONTEK
  • Publication number: 20190272981
    Abstract: A quartz structure includes a protective layer comprising yttrium oxide. The quartz structure may be fabricated by: (a) receiving a quartz structure; and (b) coating the quartz structure with a protective layer comprising yttrium oxide to form a part to be used in the plasma reactor. The part has a size and shape adapted for forming a window or injector in a plasma reactor. The protective layer does not substantially change the size or shape of the quartz structure. The part may be installed in the plasma reactor at a location where, during operation, a plasma will contact or be proximate to the part.
    Type: Application
    Filed: March 2, 2018
    Publication date: September 5, 2019
    Inventors: Lin Xu, Robin Koshy, John E. Daugherty, Satish Srinivasan, David Wetzel
  • Patent number: 10266282
    Abstract: Launch vehicles with ring-shaped external elements, and associated systems and methods. An aerospace system in accordance with a particular embodiment includes a launch vehicle having a first end and a second end generally opposite the first end, with the launch vehicle being elongated along a vehicle axis extending between the first and second ends, and having an external, outwardly facing surface. The system can further include an annular element carried by the launch vehicle, the annular element having an external, inwardly-facing surface radially spaced apart from, and extending at least partially circumferentially around, the vehicle axis. The annular element can have a first edge surface facing a first direction along the vehicle axis, and a second edge surface facing a second direction along the vehicle axis, the second direction being opposite the first direction.
    Type: Grant
    Filed: November 3, 2016
    Date of Patent: April 23, 2019
    Assignee: Blue Origin, LLC
    Inventors: Mark Featherstone, John Michael Sanders, Roger E. Ramsey, Eric David Wetzel
  • Publication number: 20170327249
    Abstract: Launch vehicles with ring-shaped external elements, and associated systems and methods are disclosed. An aerospace system in accordance with a particular embodiment includes a launch vehicle having a first end and a second end generally opposite the first end, with the launch vehicle being elongated along a vehicle axis extending between the first and second ends, and having an external, outwardly facing surface. The system can further include an annular element carried by the launch vehicle, the annular element having an external, inwardly-facing surface radially spaced apart from, and extending at least partially circumferentially around, the vehicle axis. The annular element can have a first edge surface facing a first direction along the vehicle axis, and a second edge surface facing a second direction along the vehicle axis, the second direction being opposite the first direction.
    Type: Application
    Filed: November 3, 2016
    Publication date: November 16, 2017
    Inventors: Mark Featherstone, John Michael Sanders, Roger E. Ramsey, Eric David Wetzel
  • Patent number: 9487308
    Abstract: Launch vehicles with ring-shaped external elements, and associated systems and methods. A representative aerospace system includes a launch vehicle having a first end and a second end generally opposite the first end, with the launch vehicle being elongated along a vehicle axis extending between the first and second ends, and having an external, outwardly facing surface. The system can further include an annular element carried by the launch vehicle, the annular element having an external, inwardly-facing surface radially spaced apart from, and extending at least partially circumferentially around, the vehicle axis. The annular element can have a first edge surface facing a first direction along the vehicle axis, and a second edge surface facing a second direction along the vehicle axis, the second direction being opposite the first direction. A propulsion system can be carried by the launch vehicle, and can have at least one nozzle positioned toward the first end of the vehicle to launch the vehicle.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: November 8, 2016
    Assignee: Blue Origin, LLC
    Inventors: Mark Featherstone, John Michael Sanders, Roger E. Ramsey, Eric David Wetzel
  • Publication number: 20150274951
    Abstract: A nanofilled ionomer composition comprises a nanofiller in a blend of a first ionomer and a second ionomer that is different from the first ionomer. The second ionomer is a water dispersable ionomer that allows for excellent dispersion of the nanofiller in the ionomer matrix. A variety of articles may comprise or be produced from the nanofilled ionomer composition, for example by injection molding.
    Type: Application
    Filed: October 11, 2013
    Publication date: October 1, 2015
    Inventors: Karlheinz Hausmann, Sam Louis Samuels, Gordon Mark Cohen, Mark David Wetzel
  • Publication number: 20150267033
    Abstract: An ionomer composite comprises a partially neutralized acid copolymer that comprises copolymerized units of an ?-olefin having 2 to 10 carbons and units of an ?,?-ethylenically unsaturated carboxylic acid having 3 to 8 carbons and a nanoscale filler material that are mutually dispersible in an aqueous medium. The ionomer composite itself may be formed into an article of manufacture or let down in a host polymer to form a multipolymer composite. The resulting materials may exhibit a combination of one or more desirable characteristics, including low haze, absence of undesirable coloration, high toughness, high scratch resistance, low creep, reduced coefficient of thermal expansion, and higher modulus.
    Type: Application
    Filed: October 10, 2013
    Publication date: September 24, 2015
    Inventors: Gordon Mark Cohen, Richard Allen Hayes, Mark David Wetzel
  • Publication number: 20150251384
    Abstract: Provided herein are glass laminates having at least one glass layer and a nanofilled ionomeric interlayers comprising a nanofiller in a blend of a first ionomer and a second ionomer that is different from the first ionomer. The second ionomer is a water dispersable ionomer that allows for excellent dispersion of the nanofiller in the ionomer matrix. The laminates retain favorable performance properties such as high transparency while exhibiting lower creep or heat deflection.
    Type: Application
    Filed: October 11, 2013
    Publication date: September 10, 2015
    Inventors: Stephen J. Bennison, Sam Louis Samuels, Gordon Mark Cohen, Mark David Wetzel
  • Publication number: 20150255653
    Abstract: A solar cell module comprising a solar cell layer and a sheet comprising at least one layer of a nanofilled ionomer composition, wherein the nanofilled ionomer composition comprises (1) an ionomer that is derived from a precursor ?-olefin carboxylic acid copolymer wherein (a) the precursor ?-olefin carboxylic acid copolymer comprises (i) copolymerized units of an ?-olefin and (ii) about 20 to about 25 weight % of copolymerized units of an ?,?-ethylenically unsaturated carboxylic acid; and (b) at least a portion of the total content of the carboxylic acid groups present in the precursor ?-olefin carboxylic acid copolymer have been neutralized to form metal salts of the carboxylic acid groups; and (2) one or more nanofillers.
    Type: Application
    Filed: October 11, 2013
    Publication date: September 10, 2015
    Inventors: Sam Louis Samuels, Gordon Mark Cohen, Mark David Wetzel
  • Publication number: 20140263841
    Abstract: Launch vehicles with ring-shaped external elements, and associated systems and methods are disclosed. An aerospace system in accordance with a particular embodiment includes a launch vehicle having a first end and a second end generally opposite the first end, with the launch vehicle being elongated along a vehicle axis extending between the first and second ends, and having an external, outwardly facing surface. The system can further include an annular element carried by the launch vehicle, the annular element having an external, inwardly-facing surface radially spaced apart from, and extending at least partially circumferentially around, the vehicle axis. The annular element can have a first edge surface facing a first direction along the vehicle axis, and a second edge surface facing a second direction along the vehicle axis, the second direction being opposite the first direction.
    Type: Application
    Filed: March 15, 2013
    Publication date: September 18, 2014
    Applicant: Blue Origin, LLC
    Inventors: Mark Featherstone, John Michael Sanders, Roger E. Ramsey, Eric David Wetzel
  • Publication number: 20140170409
    Abstract: A low-wear fluoropolymer composite body comprises at least one fluoropolymer and additive particles dispersed therein. Also provided is a process for the fabrication of such a fluoropolymer composite body. The composite body exhibits a low wear rate for sliding motion against a hard counterface, and may be formulated with either melt-processible or non-melt-processible fluoropolymers.
    Type: Application
    Filed: May 14, 2012
    Publication date: June 19, 2014
    Applicants: UNIVERSITY OF FLORIDA RESEARCH FOUNDATION, INC, E I DU PONT DE NEMOURS AND COMPANY
    Inventors: Gregory Scott Blackman, Christopher P. Junk, Wallace Gregory Sawyer, Brandon A. Krick, Mark David Wetzel
  • Publication number: 20140162916
    Abstract: A fluoropolymer composite comprising at least one fluoropolymer and particulate filler material is formed using a slurry process, in which the particulate filler material is first dispersed in a polar organic liquid, which is then combined with a suitable particulate fluoropolymer. The combination is dried to form a composite powder material. The composite powder material, with optional addition of another fluoropolymer, is processed to form a fluoropolymer composite body. The process can be carried out with either melt-processible or non-melt-processible fluoropolymers.
    Type: Application
    Filed: May 14, 2012
    Publication date: June 12, 2014
    Applicant: E I DU PONT DE NEMOURS AND COMPANY
    Inventors: Christopher P. Junk, Paul Gregory Bekiarian, Mark David Wetzel
  • Patent number: 8277711
    Abstract: A process and apparatus for forming nanofibers from a spinning melt utilizing a high speed rotating distribution disc. The fibers can be collected into a uniform web for selective barrier end uses. Fibers with an average fiber diameter of less that 1,000 nm can be produced.
    Type: Grant
    Filed: March 18, 2008
    Date of Patent: October 2, 2012
    Assignee: E I du Pont de Nemours and Company
    Inventors: Tao Huang, Larry R. Marshall, Jack Eugene Armantrout, Scott Yembrick, William H. Dunn, James M. Oconnor, Tim Mueller, Marios Avgousti, Mark David Wetzel
  • Publication number: 20080315453
    Abstract: A method for dispersing sepiolite-type clay particles in a polyester matrix by melt-compounding a mixture of: sepiolite-type clay, at least one linear polyester oligomer, and at least one polyester polymer to produce a nanocomposite composition; and, optionally, subjecting said nanocomposite composition to solid state polymerization to increase polyester molecular weight. Further described is a method for preparing a polyester nanocomposite composition from a masterbatch, comprising melt-compounding a mixture of: sepiolite-type clay, at least one polyester oligomer, and at least one polyester polymer to produce a nanocomposite composition containing a greater concentration of sepiolite-type clay than is desired in the final resin composition; optionally, subjecting said nanocomposite composition to solid state polymerization to increase the polyester molecular weight; and further melt compounding said nanocomposite composition with polyester polymer and, optionally, additional ingredients.
    Type: Application
    Filed: June 22, 2007
    Publication date: December 25, 2008
    Inventors: Michael Joseph Molitor, Mark Gary Weinberg, Mark David Wetzel, David T. Williamson
  • Publication number: 20080242171
    Abstract: A process and apparatus for forming nanofibers from a spinning melt utilizing a high speed rotating distribution disc. The fibers can be collected into a uniform web for selective barrier end uses. Fibers with an average fiber diameter of less that 1,000 nm can be produced.
    Type: Application
    Filed: March 18, 2008
    Publication date: October 2, 2008
    Inventors: Tao Huang, Larry R. Marshall, Jack Eugene Armantrout, Scott Yembrick, willliam H. Dunn, James M. Oconnor, Tim Mueller, Marios Avgousti, Mark David Wetzel