Patent · US Active

Clean corona gas ionization for static charge neutralization

US8048200B2 · kind B2 · utility

15Cited by

30References

42Claims

0Family size

Inventors

Peter Gefter · South San Francisco, US
Aleksey Klochkov · San Francisco, US
John Edgar Menear · Goleta, US
Lyle Dwight Nelsen · San Jose, US

Key dates

Filing date	Apr 23, 2010
Grant date	Nov 1, 2011
Priority date	—
Expiry date	Apr 23, 2030

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB03C2201/24
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

Clean corona gas ionization by separating contaminant byproducts from corona generated ions includes establishing a non-ionized gas stream having a pressure and flowing in a downstream direction, establishing a plasma region of ions and contaminant byproducts in which the pressure is sufficiently lower than the pressure of the non-ionized gas stream to prevent at least a substantial portion of the byproducts from migrating into the non-ionized gas stream, and applying an electric field to the plasma region sufficient to induce at least a substantial portion of the ions to migrate into the non-ionized gas stream.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.