Inventor

DOUGLAS DONALD J

CA18 patents

⚠️ This page may combine multiple inventors who share the name “DOUGLAS DONALD J”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

DOUGLAS DONALD J

UNIV BRITISH COLUMBIA

Method and apparatus for multiple stages of mass spectrometry

Mass spectrometer including multiple mass analysis stages and method of operation, to give improved resolution

Axial ejection with improved geometry for generating a two-dimensional substantially quadrupole field

Geometry for generating a two-dimensional substantially quadrupole field

High throughput ion source with multiple ion sprayers and ion lenses

Method and apparatus for determining the rates of reactions in liquids by mass spectrometry

Atmospheric pressure ion lens for generating a larger and more stable ion flux

Linear quadrupoles with added hexapole fields and method of building and operating same

Method of operating quadrupoles with added multipole fields to provide mass analysis in islands of stability

MDS HEALTH GROUP LTD

Multipole inlet system for ion traps

Mass spectrometer and method and improved ion transmission

Method of plasma mass analysis with reduced space charge effects

Method and apparatus for plasma mass analysis with reduced space charge effects

Mass analyzer system with reduced drift

Method and apparatus having RF biasing for sampling a plasma into a vacuum chamber

Method and apparatus for sampling a plasma into a vacuum chamber

MDS INC

Method and apparatus for providing two-dimensional substantially quadrupole fields having selected hexapole components

ELECTRONIC IMAGING SYSTEMS COR

System and method for detecting cheque fraud