TREA

Daicel Chemical Industries, Inc.

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Patents Grantslast 30 patents

  • Information Patent Grant

    Method of producing tobacco filters
    • Patent number 5,979,460
    • Issue date Nov 9, 1999
    • Daicel Chemical Industries, Inc.
    • Hiroyuki Matsumura
    • A24 - TOBACCO CIGARS CIGARETTES SMOKERS' REQUISITES