TREA

Hyogoro Aoyama

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  • Tsukuba, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Method of cleaning an exhaust gas containing nitrogen oxides and fi...
    • Patent number 5,154,901
    • Issue date Oct 13, 1992
    • Kabushiki Kaisha Riken
    • Kiyohide Yoshida
    • B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • Information Patent Grant

    Exhaust gas cleaner
    • Patent number 5,141,714
    • Issue date Aug 25, 1992
    • Kabushiki Kaisha Riken
    • Akira Obuchi
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
  • Information Patent Grant

    Catalyst for cleaning exhaust gas
    • Patent number 5,108,977
    • Issue date Apr 28, 1992
    • Kabushiki Kaisha Riken
    • Kiyohide Yoshida
    • B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL