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US 8,323,554 B2Granted
Method and apparatus for electric
OwnerWilliam K. Leonardinventor
Life of this patent
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Abstract
Methods and apparatus for hydrodischarging and hydrocharging substrates and articles to produce enhanced ability to avoid attraction of contaminants or improved capability of removing contaminants from fluids are disclosed. In another form the method involves removal of electric charges or neutralization of charge on or within substrates. Also disclosed are methods of making using electret substrates and articles for removing particulates and mists from fluid streams.
Claims9
A method of making an electret, comprising the steps of:
- a. providing at least one functional gas;
- b. forming a substrate directly in the functional gas, the gas being functional with respect to a liquid;
- c. adding a functional liquid to the substrate;
- and
- d. removing the functional liquid from the substrate.
2 more elements
Dependencies are inferred from the claim text.