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.
Claims29
1-88. (canceled)
A method of making an electret, comprising the steps of:
- a. providing at least one functional fluid;
- b. forming a substrate directly in the functional fluid;
- and
- c. removing a functional liquid from the substrate.
98-136. (canceled)
A method of modifying an electret substrate, comprising the steps of:
- a. providing an electret substrate;
- and
- b. supplying an additive to the substrate by contacting the substrate with a medium, whereby the electret substrate is modified by adsorbing species from the medium.
An electret, comprising:
- a. a substrate;
- and
- b. a charge on the substrate, the charge being created by:
- (i.) removing a first gas from the substrate with a functional, second, gas;
- (ii.) adding at least one functional liquid to the substrate;
- and
- (iii.) removing the functional liquid from the substrate.
154-160. (canceled)
Dependencies are inferred from the claim text.