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John F. Peterson

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  • Lynnfield, MA, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Temperature control of cryogenic systems
    • Patent number 4,679,401
    • Issue date Jul 14, 1987
    • Helix Technology Corporation
    • Philip A. Lessard
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Method and apparatus for throttling gas flow to a cryopump
    • Patent number 4,611,467
    • Issue date Sep 16, 1986
    • Helix Technology Corporation
    • John F. Peterson
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Reduced vacuum cryopump
    • Patent number 4,449,373
    • Issue date May 22, 1984
    • Helix Technology Corporation
    • John F. Peterson
    • C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
  • Information Patent Grant

    Multiport cryopump
    • Patent number 4,446,702
    • Issue date May 8, 1984
    • Helix Technology Corporation
    • John F. Peterson
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...