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Charles M. Sprinkle

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  • Ventura, CA, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Apparatus and method for speaker tuning and automatic digital signa...
    • Patent number 11,218,826
    • Issue date Jan 4, 2022
    • Harman International Industries, Incorporated
    • Charles Sprinkle
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Loudspeaker horn
    • Patent number 9,924,249
    • Issue date Mar 20, 2018
    • Harman International Industries, Incorporated
    • Charles M. Sprinkle
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Fluted and elongated aperture for acoustic transducer
    • Patent number 9,693,141
    • Issue date Jun 27, 2017
    • Harman International Industries, Incorporated
    • Charles Sprinkle
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Loudspeaker mounting assembly
    • Patent number 9,591,397
    • Issue date Mar 7, 2017
    • Harman International Industries, Incorporated
    • Charles M. Sprinkle
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Loudspeaker horn
    • Patent number 9,386,361
    • Issue date Jul 5, 2016
    • Harman International Industries, Incorporated
    • Charles M. Sprinkle
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Transducer cover
    • Patent number D724569
    • Issue date Mar 17, 2015
    • Harman International Industries, Incorporated
    • Charles M. Sprinkle
    • D14 - Recording, communication, or information retrieval equipment
  • Information Patent Grant

    In-wall sub-woofer with high-volume displacement
    • Patent number 8,477,966
    • Issue date Jul 2, 2013
    • Harman International Industries, Incorporated
    • Timothy Prenta
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Loudspeaker mounting assembly
    • Patent number 8,224,014
    • Issue date Jul 17, 2012
    • Harman International Industries, Incorporated
    • Charles M. Sprinkle
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    In-wall sub-woofer system with high-volume displacement
    • Patent number 7,840,018
    • Issue date Nov 23, 2010
    • Harman International Industries, Incorporated
    • Timothy Prenta
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Low-profile transducer
    • Patent number 7,450,729
    • Issue date Nov 11, 2008
    • Harman International Industries, Incorporated
    • An Duc Nguyen
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Acoustic transducer with folded diaphragm
    • Patent number 7,412,065
    • Issue date Aug 12, 2008
    • Harman International Industries, Incorporated
    • An Duc Nguyen
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Acoustic transducer with mechanical balancing
    • Patent number 7,333,620
    • Issue date Feb 19, 2008
    • Harman International Industries, Incorporated
    • An Duc Nguyen
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Front portion of diaphragm
    • Patent number D542780
    • Issue date May 15, 2007
    • Harman International Industries, Incorporated
    • An D. Nguyen
    • D14 - Recording, communication, or information retrieval equipment
  • Information Patent Grant

    Front portion of diaphragm
    • Patent number D538791
    • Issue date Mar 20, 2007
    • Harman International Industries, Incorporated
    • An D. Nguyen
    • D14 - Recording, communication, or information retrieval equipment

Patents Applicationslast 30 patents

  • Information Patent Application

    APPARATUS AND METHOD FOR SPEAKER TUNING AND AUTOMATIC DIGITAL SIGNA...
    • Publication number 20200169821
    • Publication date May 28, 2020
    • HARMAN INTERNATIONAL INDUSTRIES, INCORPORATED
    • Charles SPRINKLE
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Application

    THIN HIGH PERFORMANCE CONSTANT DIRECTIVITY WAVEGUIDE AND SPEAKER
    • Publication number 20170055067
    • Publication date Feb 23, 2017
    • HARMAN INTERNATIONAL INDUSTRIES, INCORPORATED
    • Jerry MORO
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Application

    LOUDSPEAKER HORN
    • Publication number 20160173975
    • Publication date Jun 16, 2016
    • HARMAN INTERNATIONAL INDUSTRIES, INCORPORATED
    • Charles M. Sprinkle
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Application

    FLUTED AND ELONGATED APERTURE FOR ACOUSTIC TRANSDUCER
    • Publication number 20150201279
    • Publication date Jul 16, 2015
    • HARMAN INTERNATIONAL INDUSTRIES, INCORPORATED
    • Charles Sprinkle
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Application

    LOUDSPEAKER MOUNTING ASSEMBLY
    • Publication number 20150049898
    • Publication date Feb 19, 2015
    • HARMAN INTERNATIONAL INDUSTRIES, INCORPORATED
    • Charles M. Sprinkle
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Application

    LOUDSPEAKER HORN
    • Publication number 20150014089
    • Publication date Jan 15, 2015
    • HARMAN INTERNATIONAL INDUSTRIES, INCORPORATED
    • Charles M. Sprinkle
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Application

    LOUDSPEAKER MOUNTING ASSEMBLY
    • Publication number 20130022229
    • Publication date Jan 24, 2013
    • HARMAN INTERNATIONAL INDUSTRIES, INCORPORATED
    • Charles M. Sprinkle
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Application

    IN-WALL SUB-WOOFER WITH HIGH-VOLUME DISPLACEMENT
    • Publication number 20100266149
    • Publication date Oct 21, 2010
    • HARMAN INTERNATIONAL INDUSTRIES, INCORPORATED
    • Timothy Prenta
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Application

    LOUDSPEAKER MOUNTING ASSEMBLY
    • Publication number 20080247593
    • Publication date Oct 9, 2008
    • HARMAN INTERNATIONAL INDUSTRIES, INCORPORATED
    • Charles M. Sprinkle
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Application

    In-wall sub-woofer system with high-volume displacement
    • Publication number 20080080727
    • Publication date Apr 3, 2008
    • Timothy Prenta
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Application

    Acoustic transducer with mechanical balancing
    • Publication number 20050036647
    • Publication date Feb 17, 2005
    • An Duc Nguyen
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Application

    Acoustic transducer with folded diaphragm
    • Publication number 20050036648
    • Publication date Feb 17, 2005
    • An Duc Nguyen
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Application

    Low-profile transducer
    • Publication number 20050031153
    • Publication date Feb 10, 2005
    • An Duc Nguyen
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE