Greenheck Receives Patent On Dual-State Grease Filtration Hoods

November, 2004

Greenheck Receives Patent On Dual-State Grease Filtration Hoods

The U.S. Patent and Trademarks Office issued a patent to Greenheck in October, 2004 for a two-stage air purification system its engineers invented for installation and operation within a kitchen ventilation hood.


The Grease Grabber™ (GG) multi-stage filtration system is available in Greenheck kitchen hoods and uses the Greenheck Grease-X-Tractor™ (GX) filter along with a secondary filter to remove 80% of the grease from the airstream. The Grease-X-Tractor (GX) is the primary filter and takes the brunt of the grease and heat and uses centrifugal impaction to remove large grease particles. The secondary filter uses a 1/2 inch packed bead bed to remove, by interception, the small particles of grease that are not removed by the GX filter. The Greenheck Grease Grabber filtration system utilizes these two filters to remove 100% of the particles that are 8 microns or larger in diameter and 80% of the particles that are 3 microns in diameter. Third party testing using the latest technology to measure grease extraction devices has verified that the Grease Grabber removes more grease than any other filter on the market today.


Greenheckês patented dual filtration system eliminates costly repairs and maintenance by filtering out more of the grease within the hood, which results in less grease accumulation in the ductwork and on the roof. The dual filtration system will also help meet emerging air quality regulations. Both filters in the new filtration system can be easily removed, washed and returned to the hood for years of efficient operation.

To obtain more information about this Greenheck announcement you may:

  1. Request information via e-mail
  2. Contact your local Greenheck Representative
  3. Phone us at (715) 359-6171 or fax us at (715) 355-2399
  4. Write us at Greenheck, P.O. Box 410, Schofield, WI 54476-0410
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