Method and apparatus for electric treatment of substrates
US7553440B2 · kind B2 · utility
5Cited by
52References
68Claims
0Family size
Inventor
Key dates
| Filing date | May 12, 2006 |
| Grant date | Jun 30, 2009 |
| Priority date | — |
| Expiry date | Feb 3, 2027 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T442/2238
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.