with electrical or magnetical filtering means

Patents Grantslast 30 patents

  • Information Patent Grant

    Nonlinear flexible magnetic filter element

    • Patent number 10,897,927
    • Issue date Jan 26, 2021
    • FROG CREEK PARTNERS, LLC
    • Brian Deurloo
    • A24 - TOBACCO CIGARS CIGARETTES SMOKERS' REQUISITES
  • Information Patent Grant

    Magnetized active carbon composition

    • Patent number 4,260,523
    • Issue date Apr 7, 1981
    • Tsukamoto; Siako
    • Kenkichi Tsukamoto
    • C05 - FERTILISERS MANUFACTURE THEREOF
  • Information Patent Grant

    Electrostatic and magnetic tobacco smoke filtering arrangement

    • Patent number 4,258,730
    • Issue date Mar 31, 1981
    • Seiko Tsukamoto
    • Kenkichi Tsukamoto
    • C05 - FERTILISERS MANUFACTURE THEREOF
  • Information Patent Grant

    3575179

    • Patent number 3,575,179
    • Issue date Apr 20, 1971
    • A24 - TOBACCO CIGARS CIGARETTES SMOKERS' REQUISITES
  • Information Patent Grant

    3463168

    • Patent number 3,463,168
    • Issue date Aug 26, 1969
    • A24 - TOBACCO CIGARS CIGARETTES SMOKERS' REQUISITES
  • Information Patent Grant

    3411512

    • Patent number 3,411,512
    • Issue date Nov 19, 1968
    • A24 - TOBACCO CIGARS CIGARETTES SMOKERS' REQUISITES
  • Information Patent Grant

    3064657

    • Patent number 3,064,657
    • Issue date Nov 20, 1962
    • A24 - TOBACCO CIGARS CIGARETTES SMOKERS' REQUISITES
  • Information Patent Grant

    3028864

    • Patent number 3,028,864
    • Issue date Apr 10, 1962
    • A24 - TOBACCO CIGARS CIGARETTES SMOKERS' REQUISITES

Patents Applicationslast 30 patents