Cheung K. Li Kwok Cheong

Person

  • Cornwall, CA

Patents Grantslast 30 patents

  • Information Patent Grant

    Waste acid recovery process

    • Patent number 5,082,645
    • Issue date Jan 21, 1992
    • Chemetics International Company, Ltd.
    • Riad A. Al-Samadi
    • C01 - INORGANIC CHEMISTRY