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Jacob Leidner

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  • Toronto, CA
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Patents Grantslast 30 patents

  • Information Patent Grant

    Erasable colored pencil lead
    • Patent number 6,815,471
    • Issue date Nov 9, 2004
    • Binney & Smith Inc.
    • Jacob Leidner
    • C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
  • Information Patent Grant

    Eraser
    • Patent number 6,441,091
    • Issue date Aug 27, 2002
    • Binney & Smith
    • Jacob Leidner
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
  • Information Patent Grant

    Erasable colored pencil lead
    • Patent number 6,271,286
    • Issue date Aug 7, 2001
    • Binney & Smith Inc.
    • Jacob Leidner
    • C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
  • Information Patent Grant

    Erasable colored pencil lead
    • Patent number 6,262,143
    • Issue date Jul 17, 2001
    • Binney & Smith Inc.
    • Jacob Leidner
    • C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
  • Information Patent Grant

    Erasable colored pencil lead
    • Patent number 6,011,084
    • Issue date Jan 4, 2000
    • Binney & Smith Inc.
    • Jacob Leidner
    • C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...

Patents Applicationslast 30 patents