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David A. Grewell

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  • Cincinnati, OH, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Plastic composition with spent filter media filler
    • Patent number 11,359,069
    • Issue date Jun 14, 2022
    • KENT CORPORATION
    • Somayajulu Venkata Satya Gandikota
    • A47 - FURNITURE DOMESTIC ARTICLES OR APPLIANCES COFFEE MILLS SPICE MILLS SUCT...
  • Information Patent Grant

    Thermoplastic poly acrylated glycerol adhesives useful in cellulosi...
    • Patent number 11,214,714
    • Issue date Jan 4, 2022
    • Iowa State University Research Foundation, Inc.
    • Eric W. Cochran
    • C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
  • Information Patent Grant

    Closed loop 3D printing
    • Patent number 10,442,118
    • Issue date Oct 15, 2019
    • Iowa State University Research Foundation, Inc.
    • David Grewell
    • B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
  • Information Patent Grant

    Biodegradable fertilizer
    • Patent number 9,988,318
    • Issue date Jun 5, 2018
    • Iowa State University Research Foundation, Inc.
    • James Schrader
    • C05 - FERTILISERS MANUFACTURE THEREOF
  • Information Patent Grant

    Depolymerization of polylactic acid
    • Patent number 8,895,778
    • Issue date Nov 25, 2014
    • Iowa State University Research Foundation
    • Gowrishankar Srinivasan
    • C07 - ORGANIC CHEMISTRY
  • Information Patent Grant

    Apparatus and method for ultrasonic processing of laminates
    • Patent number 8,172,969
    • Issue date May 8, 2012
    • Textron Innovations Inc.
    • Edward W. Lee
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    Apparatus and method for ultrasonic processing of laminates
    • Patent number 7,892,372
    • Issue date Feb 22, 2011
    • Textron Innovations Inc.
    • Edward W. Lee
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    Electronic masking laser imaging system
    • Patent number 6,867,388
    • Issue date Mar 15, 2005
    • Branson Ultrasonics Corporation
    • David A. Grewell
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    Light guide for laser welding
    • Patent number 6,528,755
    • Issue date Mar 4, 2003
    • Branson Ultrasonics Corporation
    • David A. Grewell
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    Transparent pressure bladder
    • Patent number 6,486,433
    • Issue date Nov 26, 2002
    • Branson Ultrasonics Corporation
    • David Grewell
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    Distance mode control for laser welding
    • Patent number 6,329,629
    • Issue date Dec 11, 2001
    • Branson Ultrasonics Corporation
    • David Grewell
    • B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
  • Information Patent Grant

    Welding method and apparatus
    • Patent number 6,064,798
    • Issue date May 16, 2000
    • Branson Ultrasonics Corporation
    • Donald C. Lovett
    • B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
  • Information Patent Grant

    Welding method and apparatus
    • Patent number 5,949,959
    • Issue date Sep 7, 1999
    • Branson Ultrasonics Corporation
    • Donald C. Lovett
    • B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
  • Information Patent Grant

    Simultaneous amplitude and force profiling during ultrasonic weldin...
    • Patent number 5,855,706
    • Issue date Jan 5, 1999
    • Branson Ultrasonics Corporation
    • David A. Grewell
    • B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
  • Information Patent Grant

    Method for processing workpieces by ultrasonic energy
    • Patent number 5,846,377
    • Issue date Dec 8, 1998
    • Branson Ultrasonics Corporation
    • Jeffrey L. Frantz
    • B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
  • Information Patent Grant

    Method of determining the collapse of plastic parts
    • Patent number 5,788,791
    • Issue date Aug 4, 1998
    • Branson Ultrasonics Corporation
    • David A. Grewell
    • B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
  • Information Patent Grant

    Welding system and method of setting welding machine parameters
    • Patent number 5,772,814
    • Issue date Jun 30, 1998
    • Branson Ultrasonic Corporation
    • David A. Grewell
    • B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
  • Information Patent Grant

    Method for processing workpieces by ultrasonic energy
    • Patent number 5,658,408
    • Issue date Aug 19, 1997
    • Branson Ultrasonics Corporation
    • Jeffrey L. Frantz
    • B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL

Patents Applicationslast 30 patents

  • Information Patent Application

    Plastic Composition With Spent Filter Media Filler
    • Publication number 20200024422
    • Publication date Jan 23, 2020
    • Kent Corporation
    • Somayajulu Venkata Satya Gandikota
    • A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING
  • Information Patent Application

    THERMOPLASTIC POLY ACRYLATED GLYCEROL ADHESIVES USEFUL IN CELLULOSI...
    • Publication number 20190345369
    • Publication date Nov 14, 2019
    • Iowa State University Research Foundation, Inc.
    • Eric W. COCHRAN
    • B27 - WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL NAILING OR STAPLING MACH...
  • Information Patent Application

    CLOSED LOOP 3D PRINTING
    • Publication number 20170087767
    • Publication date Mar 30, 2017
    • Iowa State University Research Foundation, Inc.
    • David Grewell
    • B33 - ADDITIVE MANUFACTURING TECHNOLOGY
  • Information Patent Application

    BIODEGRADABLE FERTILIZER
    • Publication number 20160102024
    • Publication date Apr 14, 2016
    • Iowa State University Research Foundation, Inc.
    • James Schrader
    • C05 - FERTILISERS MANUFACTURE THEREOF
  • Information Patent Application

    DEPOLYMERIZATION OF POLYLACTIC ACID
    • Publication number 20130096342
    • Publication date Apr 18, 2013
    • Gowrishankar Srinivasan
    • C07 - ORGANIC CHEMISTRY
  • Information Patent Application

    Soy based spray coating
    • Publication number 20120321808
    • Publication date Dec 20, 2012
    • Roy D. Taylor
    • C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
  • Information Patent Application

    Apparatus and Method for Ultrasonic Processing of Laminates
    • Publication number 20110114247
    • Publication date May 19, 2011
    • Edward W. Lee
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Application

    ULTRASONIC WELDING USING AMPLITUDE PROFILING
    • Publication number 20100176184
    • Publication date Jul 15, 2010
    • Branson Ultrasonics Corporation
    • James F. Sheehan
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Application

    Apparatus and Method for Ultrasonic Processing of Laminates
    • Publication number 20080314498
    • Publication date Dec 25, 2008
    • Edward W. Lee
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Application

    Ultrasonic Welding Using Amplitude Profiling
    • Publication number 20080054051
    • Publication date Mar 6, 2008
    • Branson Ultrasonics Corporation
    • James F. Sheehan
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Application

    Electronic masking laser imaging system
    • Publication number 20040200812
    • Publication date Oct 14, 2004
    • David A. Grewell
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Application

    Transparent pressure bladder
    • Publication number 20020088777
    • Publication date Jul 11, 2002
    • David Grewell
    • B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
  • Information Patent Application

    Light guide for laser welding
    • Publication number 20020008089
    • Publication date Jan 24, 2002
    • David A. Grewell
    • B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL