Back to results
US 7,604,687 B2Granted
Gas filtration media
AssigneeDaramic, LLC
InventorsEric H. Miller, Joseph G. Yaritz, Karl Froelich, Mark T. Demeuse
Life of this patent
Estimating the term…
Abstract
A gas filtration media comprises a microporous membrane. The microporous membrane includes an ultrahigh molecular weight polyethylene (UHMWPE), an inorganic material, wherein the ratio of inorganic material to polymer is in the range of 4:1 to 1:4, and less than 30% by weight of the membrane being a processing oil.
Claims19
A method of filtering particulates from a gas comprising the step of:
- providing a filtration media comprising a microporous membrane, the membrane including an ultra high molecular weight polyethylene, an inorganic material, wherein the ration of inorganic material to polymer being in the range of 4:1 to 1:4, and a processing oil being no more than 30% by weight of said membrane.
A gas filtration media comprising:
- a microporous membrane, the membrane including
- an ultra high molecular weight polyethylene
- an inorganic material
- wherein a ratio of inorganic material to polymer being in the range of 4:1 to 1:4
- a processing oil being no more than 30% by weight of said membrane and
- less than 2% by weight of said membrane of a thermoplastic polyolefin.
3 more elements
Dependencies are inferred from the claim text.