said cross-section being hollow

Patents Grantslast 30 patents

  • Information Patent Grant

    High-temperature, heat-sealed products and methods and means for th...

    • Patent number 5,993,593
    • Issue date Nov 30, 1999
    • Heat Sealing Technology, Inc.
    • Henry D. Swartz
    • B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
  • Information Patent Grant

    Apparatus for sealing and severing a web of film

    • Patent number 4,964,944
    • Issue date Oct 23, 1990
    • Baxter International Inc.
    • William C. Christine
    • B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
  • Information Patent Grant

    Apparatus for sealing a web of film in a packaging

    • Patent number 4,856,260
    • Issue date Aug 15, 1989
    • Baxter International Inc.
    • Lecon Woo
    • B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
  • Information Patent Grant

    Appratus for sealing and severing a web of film

    • Patent number 4,856,259
    • Issue date Aug 15, 1989
    • Baxter International Inc.
    • Lecon Woo
    • B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
  • Information Patent Grant

    Impulse sealer

    • Patent number 4,359,361
    • Issue date Nov 16, 1982
    • The Dow Chemical Company
    • Donald R. Wright
    • B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
  • Information Patent Grant

    Impulse sealing apparatus

    • Patent number 4,075,818
    • Issue date Feb 28, 1978
    • The Dow Chemical Company
    • Donald R. Wright
    • B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
  • Information Patent Grant

    3692613

    • Patent number 3,692,613
    • Issue date Sep 19, 1972
    • B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
  • Information Patent Grant

    3547743

    • Patent number 3,547,743
    • Issue date Dec 15, 1970
    • B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
  • Information Patent Grant

    3389033

    • Patent number 3,389,033
    • Issue date Jun 18, 1968
    • B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
  • Information Patent Grant

    3301735

    • Patent number 3,301,735
    • Issue date Jan 31, 1967
    • B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
  • Information Patent Grant

    2941575

    • Patent number 2,941,575
    • Issue date Jun 21, 1960
    • B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
  • Information Patent Grant

    2796914

    • Patent number 2,796,914
    • Issue date Jun 25, 1957
    • B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
  • Information Patent Grant

    2779851

    • Patent number 2,779,851
    • Issue date Jan 29, 1957
    • B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
  • Information Patent Grant

    2621704

    • Patent number 2,621,704
    • Issue date Dec 16, 1952
    • B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
  • Information Patent Grant

    2420400

    • Patent number 2,420,400
    • Issue date May 13, 1947
    • B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL