Inventor · Bloomington, IN, US

David E. Clemmer

25Patents
9h-index
24Co-inventors
75Inventor score

Filing activity: Jun 2, 1997 → Feb 8, 2024

Most-cited inventions

PatentTitleAreaCited byStatus
US6323482A Ion mobility and mass spectrometer Electricity 133 Expired
US5905258A Hybrid ion mobility and mass spectrometer Electricity 112 Expired
US6498342B1 Ion separation instrument Electricity 57 Expired
US6960761B2 Instrument for separating ions in time as functions of preselected ion mobility and ion mass Electricity 38 Expired
US6559441B2 Ion separation instrument Electricity 30 Expired
US7077944B2 Instrument for separating ions in time as functions of preselected ion mobility and ion mass Electricity 24 Expired
US6040573A Electric field generation for charged particle analyzers Electricity 13 Expired
US7838821B2 Ion mobility spectrometer instrument and method of operating same Physics 11 Active
US8362420B2 Apparatus and methods for analyzing ions Electricity 10 Active
US9683965B2 Hybrid ion mobility spectrometer Physics 9 Active
US8872102B2 Ion mobility spectrometer and method of operating same Electricity 6 Active
US8513591B2 Ion mobility spectrometer instrument and method of operation Physics 5 Active
US11942317B2 Identification of sample subspecies based on particle mass and charge over a range of sample temperatures Electricity 3 Active
US10234423B2 Hybrid ion mobility spectrometer Electricity 3 Active
US8618475B2 Ion mobility spectrometer with one or more integral ion activation regions Physics 3 Active
US9810664B2 Ion mobility spectrometer and method of operating same Electricity 1 Active
US9368333B2 Ion mobility spectrometer and method of operating same Electricity 1 Active
US9129782B2 Ion mobility spectrometer and method of operating same Electricity 1 Active
US12390765B2 System and method for identifying, selecting and purifying particles Electricity 0 Active
US10845337B2 Method for characterizing polysaccharides Physics 0 Active
US10788453B2 Closed path ion mobility spectrometer having a common ion inlet and outlet Electricity 0 Active
US12293908B2 Mass spectrometer with charge measurement arrangement Electricity 0 Active
US11420205B2 Instrument and method for energizing molecules in charged droplets Performing Operations; Transporting 0 Active
US12237161B2 Identification of sample subspecies based on particle charge behavior under structural change-inducing sample conditions Electricity 0 Active
US10024821B2 Ion mobility spectrometer and method of operating same Physics 0 Active

Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.