Patent · US Active

Field emission device with protecting vapor

US8076834B2 · kind B2 · utility

0Cited by

3References

10Claims

0Family size

Assignee

E.I. DU PONT DE NEMOURS AND COMPANY · US

Inventors

Adam Fennimore · Wilmington, US
David Herbert Roach · Hockessin, US

Key dates

Filing date	Aug 20, 2008
Grant date	Dec 13, 2011
Priority date	—
Expiry date	Sep 21, 2028

Classification

Technology area (CPC H)Electricity
CPC primaryH01J31/123
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A field emission device in which a protecting vapor is present in an evacuated space between a field emission cathode assembly and an anode. The protecting vapor may be one or more hydrogen-containing gases such as a gas containing M—H bonds where M may be C, Si, B, Al or P.

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