MDS LLC
91Patents
19Active
91Granted
53Portfolio score
Filing activity: Feb 6, 1997 → Jan 7, 2022 · 15 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5847386A | Spectrometer with axial field | Electricity | 181 | Expired |
| US6177668A | Axial ejection in a multipole mass spectrometer | Electricity | 151 | Expired |
| US6504148B1 | Quadrupole mass spectrometer with ION traps to enhance sensitivity | Electricity | 89 | Expired |
| US6744043B2 | Ion mobilty spectrometer incorporating an ion guide in combination with an MS device | Electricity | 80 | Expired |
| US6140638A | Bandpass reactive collision cell | Electricity | 68 | Expired |
| US5969352A | Spray chamber with dryer | Electricity | 62 | Expired |
| US6285027A | MS/MS scan methods for a quadrupole/time of flight tandem mass spectrometer | Electricity | 57 | Expired |
| US6630662B1 | Setup for mobility separation of ions implementing an ion guide with an axial field and counterflow of gas | Physics | 57 | Expired |
| US6748975B2 | Microfluidic valve and method of manufacturing same | Emerging Cross-Sectional Technologies | 54 | Expired |
| US6507019B2 | MS/MS scan methods for a quadrupole/time of flight tandem mass spectrometer | Electricity | 44 | Expired |
| US6093929A | High pressure MS/MS system | Electricity | 44 | Expired |
| US6713757B2 | Controlling the temporal response of mass spectrometers for mass spectrometry | Electricity | 41 | Expired |
| US6534765B1 | Atmospheric pressure photoionization (APPI): a new ionization method for liquid chromatography-mass spectrometry | Electricity | 40 | Expired |
| US6586731B1 | High intensity ion source apparatus for mass spectrometry | Electricity | 38 | Expired |
| US6815673B2 | Use of notched broadband waveforms in a linear ion trap | Electricity | 36 | Expired |
| US7135296B2 | Elemental analysis of tagged biologically active materials | Physics | 32 | Expired |
| US7145133B2 | Apparatus and method for MSnth in a tandem mass spectrometer system | Electricity | 29 | Expired |
| US7126114B2 | Method and system for mass analysis of samples | Electricity | 27 | Expired |
| USRE39353E1 | Mass spectrometer system and method for matrix-assisted laser desorption measurements | General | 25 | Expired |
| US6720554B2 | Triple quadrupole mass spectrometer with capability to perform multiple mass analysis steps | Electricity | 25 | Expired |
| US6703607B2 | Axial ejection resolution in multipole mass spectrometers | Electricity | 23 | Expired |
| US7351958B2 | Ion optics systems | Electricity | 23 | Expired |
| US7259371B2 | Method and apparatus for improved sensitivity in a mass spectrometer | Electricity | 22 | Expired |
| US7227137B2 | Fragmentation of ions by resonant excitation in a high order multipole field, low pressure ion trap | Electricity | 21 | Expired |
| US6759650B2 | Method of and apparatus for ionizing an analyte and ion source probe for use therewith | Electricity | 20 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.