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Lefteris Valsamis

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  • Stratford, CT, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Four wing, non-intermeshing rotors for synchronous drive to provide...
    • Patent number 6,494,607
    • Issue date Dec 17, 2002
    • Farrel Corporation
    • Lefteris Valsamis
    • B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
  • Information Patent Grant

    Multi-screw, extrusion-compounding machine with modular mixing elem...
    • Patent number 5,487,602
    • Issue date Jan 30, 1996
    • Farrel Corporation
    • Lefteris N. Valsamis
    • B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
  • Information Patent Grant

    Rotary processor for plastic and polymeric materials providing surg...
    • Patent number 4,711,581
    • Issue date Dec 8, 1987
    • Farrel Corporation
    • Pradip S. Mehta
    • B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
  • Information Patent Grant

    Rotary processors for devolatilizing materials
    • Patent number 4,606,646
    • Issue date Aug 19, 1986
    • USM Corporation
    • Pradip S. Mehta
    • B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
  • Information Patent Grant

    Rotary processors and method for devolatilizing materials
    • Patent number 4,529,320
    • Issue date Jul 16, 1985
    • USM Corporation
    • Pradip S. Mehta
    • B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
  • Information Patent Grant

    Rotary processors and vacuum systems
    • Patent number 4,529,478
    • Issue date Jul 16, 1985
    • USM Corporation
    • Pradip S. Mehta
    • B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
  • Information Patent Grant

    Rotary processors and seals
    • Patent number 4,527,900
    • Issue date Jul 9, 1985
    • USM Corporation
    • Pradip S. Mehta
    • B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
  • Information Patent Grant

    Process and apparatus for processing plastic and polymeric materials
    • Patent number 4,421,412
    • Issue date Dec 20, 1983
    • USM Corporation
    • Peter Hold
    • B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
  • Information Patent Grant

    Rotary processor
    • Patent number 4,411,532
    • Issue date Oct 25, 1983
    • USM Corporation
    • Lefteris N. Valsamis
    • B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
  • Information Patent Grant

    Rotary processors
    • Patent number 4,402,616
    • Issue date Sep 6, 1983
    • USM Corporation
    • Lefteris N. Valsamis
    • B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
  • Information Patent Grant

    Rotary processors
    • Patent number 4,389,119
    • Issue date Jun 21, 1983
    • USM Corporation
    • Lefteris N. Valsamis
    • B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
  • Information Patent Grant

    Processing element
    • Patent number 4,255,059
    • Issue date Mar 10, 1981
    • USM Corporation
    • Peter Hold
    • B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
  • Information Patent Grant

    Rotary processor
    • Patent number 4,213,709
    • Issue date Jul 22, 1980
    • USM Corporation
    • Lefteris N. Valsamis
    • B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL

Patents Applicationslast 30 patents