Patent · US Active

Clean corona gas ionization for static charge neutralization

US8167985B2 · kind B2 · utility

2Cited by

32References

7Claims

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	Oct 26, 2011
Grant date	May 1, 2012
Priority date	—
Expiry date	Oct 26, 2031

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.