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Patents

Intellectual Property Protection

Stirling Ultracold freezers and HUMM™ free-piston Stirling engines are protected by US and international patents.

Global Cooling free-piston Stirling engine patents

Intellectual Property Protection
Stirling Ultracold freezers and HUMM™ free-piston Stirling engines are protected by US and international patents.

Stirling Ultracold ultra-low freezers operate without costly refrigeration compressors or noisy cascade systems associated with ULT storage. Stirling Ultracold’s ULT freezers run an elegantly simple application that combines the Stirling Ultracold HUMM™ free-piston Stirling technology with a thermosiphon that contains no moving parts.

  • US Patent 6,901,845
  • Japanese Patent 3749651
  • Brazilian Patent P10210295-1
  • Chinese Patent ZL02819435.7
  • German Patent DE 102 97 347 B4
  • talian Patent 3749651
  • US Patent 7,073,567 B2
  • Japanese Patent 4151886
  • Chinese Patent ZL02812539.8
  • German Patent 102 97 119
  • US Patent 6,550,255 B2
  • Patent Application WO2003016795 A1 and WO2002077547 A1
  • Patent Application WO2013055724 A1
  • US Patent Application US20130088176 A1
  • US Patent 8,615,993.
  • Patent Application WO2011031616 A1

Model SU780XLE patents

The Model SU780XLE employs the M600 free-piston Stirling engine which is protected by US and international patents described herein.

Additional patents that apply to this product are listed here:

  • US Patent 10,329,822 B2
    Date of Patent: Jun. 25, 2019

The Model SU780UE employs the M600 Humm™ free-piston Stirling engine which is protected by US and international patents described herein.

Additional patents that apply to this product are listed here:

  • US Provisional Patent 61/677,528 filed 07/31/2012

Model SU105UE patents

The Model SU105UE ultra-low freezer employs the Humm™ free-piston Stirling engine which is protected by US and international patents described herein.

Additional patents that apply to this product are listed here:

  • US Provisional Patent 61/677,528 filed 07/31/2012

Shuttle model ULT25NEU patents

The Shuttle ultra-low freezer employs the M150A Humm™ free-piston Stirling engine which is protected by US and international patents described herein.

Additional patents that apply to this product are listed here:

  • Japanese Patent 4352459
  • US Patent 7,055,321
  • India application 1236/DEL/2005
  • Chinese Patent ZL10064868.9
  • European Patent 1596144
  • Japanese Patent 3607837

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