Patent · US Expired

Mass spectrometer filter

US4202080A · kind A · utility

3Cited by

4References

28Claims

0Family size

Assignee

U.T.I.-Spectrotherm Corporation · US

Inventors

Robert A. Holzl · Tustin, US
Frederick P. Pickett · Sierra Madre, US
James L. Lawrence · Ocala, US

Key dates

Filing date	Mar 30, 1979
Grant date	May 13, 1980
Priority date	—
Expiry date	Mar 30, 1999

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T29/49982
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A process for producing mass filters for use in mass spectrometers. Several electrodes having precisely shaped surfaces must be held in precisely determined positions with respect to each other. Insulators are placed into position on the surface of a mandrel and a layer of metal is deposited over the mandrel and insulators to form a composite unitary structure, including the electrodes. The deposited metal overlying the insulators is then removed, electrically isolating the electrodes.

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