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Richard Knauer

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  • Carmel, IN, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Tube-formed earplug with integral stem
    • Patent number 7,886,744
    • Issue date Feb 15, 2011
    • 3M Innovative Properties Company
    • Richard Knauer
    • A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
  • Information Patent Grant

    Mold for forming a hearing protective device
    • Patent number 7,731,487
    • Issue date Jun 8, 2010
    • 3M Innovative Properties Company
    • Richard Knauer
    • A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
  • Information Patent Grant

    Hearing protective device and method of making the same
    • Patent number 7,727,433
    • Issue date Jun 1, 2010
    • 3M Innovative Properties Company
    • Richard Knauer
    • A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
  • Information Patent Grant

    Earplug
    • Patent number 7,475,686
    • Issue date Jan 13, 2009
    • Cabot Safety Intermediate Corporation
    • Richard E. Knauer
    • A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
  • Information Patent Grant

    High sound attenuating hearing protection device
    • Patent number 7,464,786
    • Issue date Dec 16, 2008
    • Cabot Safety Intermediate Corporation
    • Robert N. Falco
    • A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
  • Information Patent Grant

    Hearing protection device
    • Patent number D528204
    • Issue date Sep 12, 2006
    • Cabot Safety Intermediate Corporation
    • Marc Doty
    • D24 - Medical and laboratory equipment
  • Information Patent Grant

    Hearing protection device
    • Patent number D524937
    • Issue date Jul 11, 2006
    • Cabot Safety Intermediate Corporation
    • Marc Doty
    • D24 - Medical and laboratory equipment
  • Information Patent Grant

    Stemmed earplug
    • Patent number D496722
    • Issue date Sep 28, 2004
    • Cabot Safety Intermediate Corporation
    • Robert N. Falco
    • D24 - Medical and laboratory equipment
  • Information Patent Grant

    Earplug
    • Patent number D492768
    • Issue date Jul 6, 2004
    • Cabot Safety Intermediate Corporation
    • Richard Knauer
    • D24 - Medical and laboratory equipment
  • Information Patent Grant

    Earplug
    • Patent number D492767
    • Issue date Jul 6, 2004
    • Cabot Safety Intermediate Corporation
    • Richard Knauer
    • D24 - Medical and laboratory equipment
  • Information Patent Grant

    Earplug
    • Patent number D481118
    • Issue date Oct 21, 2003
    • Cabot Safety Intermediate Corporation
    • Marc Doty
    • D24 - Medical and laboratory equipment
  • Information Patent Grant

    Earplug
    • Patent number D466995
    • Issue date Dec 10, 2002
    • Cabot Safety Intermediate Corporation
    • Richard Knauer
    • D24 - Medical and laboratory equipment
  • Information Patent Grant

    Multi-color variably attenuating earplug
    • Patent number 6,105,715
    • Issue date Aug 22, 2000
    • Aearo Company
    • Richard E. Knauer
    • A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
  • Information Patent Grant

    Glow-in-the-dark hearing protective devices
    • Patent number 6,095,146
    • Issue date Aug 1, 2000
    • Aearo Company
    • Richard Knauer
    • A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE

Patents Applicationslast 30 patents