Ja Hyun Yang

Person

  • Seoul, KR

Patents Grantslast 30 patents

  • Information Patent Grant

    Drilling oil and method of preparing the same

    • Patent number 10,233,373
    • Issue date Mar 19, 2019
    • SK Innovation Co., Ltd.
    • Hee Jung Jeon
    • C11 - ANIMAL AND VEGETABLE OILS, FATS, FATTY SUBSTANCES AND WAXES FATTY ACIDS...
  • Information Patent Grant

    Drilling oil and method of preparing the same

    • Patent number 9,879,169
    • Issue date Jan 30, 2018
    • SK Innovation Co., Ltd.
    • Hee Jung Jeon
    • C11 - ANIMAL AND VEGETABLE OILS, FATS, FATTY SUBSTANCES AND WAXES FATTY ACIDS...

Patents Applicationslast 30 patents