Electrode system for multipoles and especially for multipole or monopole mass spectrometers
US4117321A · kind A · utility
8Cited by
6References
20Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 23, 1977 |
| Grant date | Sep 26, 1978 |
| Priority date | — |
| Expiry date | May 23, 1997 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J49/4255
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Pole rod electrodes especially for quadrupole mass spectrometers are seated in a pipe of thermally moldable material formed with a number of intersecting adjacent inside flat surfaces in precise relationship with the pole rods parallel to one another within a tolerance of a few micrometers arranged to insure a resolution within the range around the mass number 1000 so that it is possible to separate completely adjacent integral mass numbers, the rods being capable of removal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.