naphthalene fraction heavy fraction

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  • CPC
  • C10C1/12
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Patents Grantslast 30 patents

  • Information Patent Grant

    3291851

    • Patent number 3,291,851
    • Issue date Dec 13, 1966
    • C07 - ORGANIC CHEMISTRY
  • Information Patent Grant

    3151176

    • Patent number 3,151,176
    • Issue date Sep 29, 1964
    • C07 - ORGANIC CHEMISTRY