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Kenneth A. Aho

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  • Chisago, MN, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Directed reflection optical device
    • Patent number 5,471,348
    • Issue date Nov 28, 1995
    • Minnesota Mining and Manufacturing Company
    • Richard A. Miller
    • G02 - OPTICS
  • Information Patent Grant

    High aspect ratio lighting element
    • Patent number 5,190,370
    • Issue date Mar 2, 1993
    • Minnesota Mining and Manufacturing Company
    • Richard A. Miller
    • G02 - OPTICS
  • Information Patent Grant

    Passive railroad crossing warning system
    • Patent number 5,130,848
    • Issue date Jul 14, 1992
    • Minnesota Mining and Manufacturing Company
    • Richard A. Miller
    • E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
  • Information Patent Grant

    Multiple cavity light fixture
    • Patent number 5,097,395
    • Issue date Mar 17, 1992
    • Minnesota Mining and Manufacturing Company
    • Kenneth A. Aho
    • F21 - LIGHTING
  • Information Patent Grant

    Uniform intensity profile catadioptric lens
    • Patent number 5,029,060
    • Issue date Jul 2, 1991
    • Minnesota Mining and Manufacturing Company
    • Kenneth A. Aho
    • F21 - LIGHTING
  • Information Patent Grant

    Back-lit display
    • Patent number 4,874,228
    • Issue date Oct 17, 1989
    • Minnesota Mining and Manufacturing Company
    • Kenneth A. Aho
    • G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
  • Information Patent Grant

    Automotive lighting element
    • Patent number 4,799,131
    • Issue date Jan 17, 1989
    • Minnesota Mining and Manufacturing Company
    • Kenneth A. Aho
    • F21 - LIGHTING
  • Information Patent Grant

    Reflective film
    • Patent number 4,799,137
    • Issue date Jan 17, 1989
    • Minnesota Mining and Manufacturing Company
    • Kenneth A. Aho
    • G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
  • Information Patent Grant

    Cone shaped Fresnel reflector
    • Patent number 4,789,921
    • Issue date Dec 6, 1988
    • Minnesota Mining and Manufacturing Company
    • Kenneth A. Aho
    • F21 - LIGHTING