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Richard R. Helinski

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  • Hudson, NH, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Ink jet color printing method
    • Patent number 5,196,236
    • Issue date Mar 23, 1993
    • Howtek, Inc.
    • Robert Howard
    • B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
  • Information Patent Grant

    Method and means for constructing three-dimensional articles by par...
    • Patent number 5,136,515
    • Issue date Aug 4, 1992
    • Richard Helinski
    • B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
  • Information Patent Grant

    Solid ink delivery system
    • Patent number 4,870,430
    • Issue date Sep 26, 1989
    • Howtek, Inc.
    • Robert C. Daggett
    • B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
  • Information Patent Grant

    Ink jet color printing method
    • Patent number 4,741,930
    • Issue date May 3, 1988
    • Howtek, Inc.
    • Robert Howard
    • B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
  • Information Patent Grant

    Color printed record and method
    • Patent number 4,721,635
    • Issue date Jan 26, 1988
    • Howtek, Inc.
    • Richard R. Helinski
    • B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
  • Information Patent Grant

    Ink jet printer
    • Patent number 4,714,936
    • Issue date Dec 22, 1987
    • Howtek, Inc.
    • Richard R. Helinski
    • B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
  • Information Patent Grant

    Color printed record
    • Patent number 4,666,757
    • Issue date May 19, 1987
    • Howtek, Inc.
    • Richard R. Helinski
    • B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
  • Information Patent Grant

    Sheet-feed mechanism for rotary print head
    • Patent number 4,591,281
    • Issue date May 27, 1986
    • Howtek, Inc.
    • Robert Howard
    • B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS