Assignee
WATERS INVESTMENTS LTD
US·133 granted patents·36 pending applications·3,718 citations·filing 1993–2008
Top patents by PatentIndex Score
169 records- 0198US7442299B2Ion exchange porous resins for solid phase extraction and chromatographyWATERS INVESTMENTS LTD·Filed 2007·Granted Oct 28, 2008·57 cites·2 claims
- 0298US6686035B2Porous inorganic/organic hybrid particles for chromatographic separations and process for their preparationWATERS INVESTMENTS LTD·Filed 2001·Granted Feb 3, 2004·201 cites·34 claims
- 0398US6528167B2Porous hybrid particles with organic groups removed from the surfaceWATERS INVESTMENTS LTD·Filed 2001·Granted Mar 4, 2003·130 cites·43 claims
- 0496US7223473B2Porous inorganic/organic hybrid particles for chromatographic separations and process for their preparationWATERS INVESTMENTS LTD·Filed 2003·Granted May 29, 2007·65 cites·21 claims
- 0596US7175913B2Porous hybrid particles with organic groups removed from the surfaceWATERS INVESTMENTS LTD·Filed 2003·Granted Feb 13, 2007·84 cites·42 claims
- 0695US7250214B2Porous inorganic/organic hybrid monolith materials for chromatographic separations and process for their preparationWATERS INVESTMENTS LTD·Filed 2002·Granted Jul 31, 2007·89 cites·84 claims
- 0795US6557575B1Fluid flow control freeze/thaw valve for narrow bore capillaries or microfluidic devicesWATERS INVESTMENTS LTD·Filed 2001·Granted May 6, 2003·63 cites·16 claims
- 0895US5828062AIonization electrospray apparatus for mass spectrometryWATERS INVESTMENTS LTD·Filed 1997·Granted Oct 27, 1998·113 cites·7 claims
- 0993US7311502B2Method for using a hydraulic amplifier pump in ultrahigh pressure liquid chromatographyWATERS INVESTMENTS LTD·Filed 2004·Granted Dec 25, 2007·47 cites·23 claims
- 1093US7128081B2Peltier based freeze-thaw valves and method of useWATERS INVESTMENTS LTD·Filed 2005·Granted Oct 31, 2006·29 cites·22 claims
- 1192US7366704B2System and method for deconvoluting the effect of topography on scanning probe microscopy measurementsWATERS INVESTMENTS LTD·Filed 2002·Granted Apr 29, 2008·58 cites·36 claims
- 1292US6952950B2System and method for automatic identification of a detachable component of an instrumentWATERS INVESTMENTS LTD·Filed 2003·Granted Oct 11, 2005·63 cites·21 claims
- 1392US6712587B2Hydraulic amplifier pump for use in ultrahigh pressure liquid chromatographyWATERS INVESTMENTS LTD·Filed 2001·Granted Mar 30, 2004·45 cites·23 claims
- 1492US6404193B1Solvent susceptibility compensation for coupled LC-NMRWATERS INVESTMENTS LTD·Filed 2001·Granted Jun 11, 2002·55 cites·19 claims
- 1592US6278111B1Electrospray for chemical analysisWATERS INVESTMENTS LTD·Filed 1998·Granted Aug 21, 2001·86 cites·21 claims
- 1692US6188813B1Flow cell, analyte measurement apparatus and methods related theretoWATERS INVESTMENTS LTD·Filed 1999·Granted Feb 13, 2001·114 cites·22 claims
- 1791US7564027B2Adsorption, detection and identification of components of ambient air with desorption/ionization on silicon mass spectrometry (DIOS-MS)WATERS INVESTMENTS LTD·Filed 2004·Granted Jul 21, 2009·43 cites·20 claims
- 1891US7526941B2Rheometer torque calibration fixtureWATERS INVESTMENTS LTD·Filed 2007·Granted May 5, 2009·19 cites·35 claims
- 1991US7017393B2Rotary rheometer magnetic bearingWATERS INVESTMENTS LTD·Filed 2005·Granted Mar 28, 2006·13 cites·14 claims
- 2091US6527951B1Chromatographic columnWATERS INVESTMENTS LTD·Filed 2000·Granted Mar 4, 2003·56 cites·10 claims
- 2191US6322695B1Ion exchange porous resins for solid phase extraction and chromatographyWATERS INVESTMENTS LTD·Filed 2000·Granted Nov 27, 2001·31 cites·6 claims
- 2291US5823747ABubble detection and recovery in a liquid pumping systemWATERS INVESTMENTS LTD·Filed 1996·Granted Oct 20, 1998·69 cites·17 claims
- 2390US7308908B2Device and method for controlling the flow of fluid in a conduitWATERS INVESTMENTS LTD·Filed 2006·Granted Dec 18, 2007·23 cites·39 claims
- 2490US7189964B2System and method for isotopic signature and mass analysisWATERS INVESTMENTS LTD·Filed 2005·Granted Mar 13, 2007·16 cites·23 claims
- 2590US6526188B2Flow cell, analyte measurement apparatus and methods related theretoWATERS INVESTMENTS LTD·Filed 2001·Granted Feb 25, 2003·42 cites·24 claims
- 2690US5641270ADurable high-precision magnetostrictive pumpWATERS INVESTMENTS LTD·Filed 1995·Granted Jun 24, 1997·124 cites·19 claims
- 2789US6396057B1Electrospray and other LC/MS interfacesWATERS INVESTMENTS LTD·Filed 2000·Granted May 28, 2002·37 cites·5 claims
- 2889US6387256B1Chromatography columnWATERS INVESTMENTS LTD·Filed 2000·Granted May 14, 2002·41 cites·11 claims
- 2989US5436446AAnalyzing time modulated electrosprayWATERS INVESTMENTS LTD·Filed 1994·Granted Jul 25, 1995·53 cites·10 claims
- 3088US6723236B2Device for solid phase extraction and method for purifying samples prior to analysisWATERS INVESTMENTS LTD·Filed 2002·Granted Apr 20, 2004·62 cites·17 claims
- 3188US6636304B2Laser induced fluorescence capillary interfaceWATERS INVESTMENTS LTD·Filed 2001·Granted Oct 21, 2003·28 cites·15 claims
- 3288US6456955B1Automated test protocolWATERS INVESTMENTS LTD·Filed 2000·Granted Sep 24, 2002·70 cites·18 claims
- 3387US7418352B2Method of using data binning in the analysis of chromatography/spectrometry dataWATERS INVESTMENTS LTD·Filed 2006·Granted Aug 26, 2008·7 cites·12 claims
- 3487US7041972B2Mass spectrometerWATERS INVESTMENTS LTD·Filed 2004·Granted May 9, 2006·36 cites·60 claims
- 3587USRE37553EBubble detection and recovery in a liquid pumping systemWATERS INVESTMENTS LTD·Filed 1999·Granted Feb 19, 2002·50 cites·17 claims
- 3686US7087897B2Mass spectrometerWATERS INVESTMENTS LTD·Filed 2004·Granted Aug 8, 2006·25 cites·78 claims
- 3785US7229539B1Destructible surfactants and uses thereofWATERS INVESTMENTS LTD·Filed 2000·Granted Jun 12, 2007·24 cites·20 claims
- 3885US7072773B2Method of using data binning in the analysis of chromatography/spectrometry dataWATERS INVESTMENTS LTD·Filed 2004·Granted Jul 4, 2006·10 cites·22 claims
- 3985US6588254B1Rotary rheometerWATERS INVESTMENTS LTD·Filed 2002·Granted Jul 8, 2003·30 cites·29 claims
- 4084US7186336B2Flow sensing apparatusWATERS INVESTMENTS LTD·Filed 2004·Granted Mar 6, 2007·25 cites·14 claims
- 4184US6071610AEnhanced resolution matrix-laser desorption and ionization TOF-MS sample surfaceWATERS INVESTMENTS LTD·Filed 1997·Granted Jun 6, 2000·54 cites·18 claims
- 4284US5900934ACapillary chromatography detector apparatusWATERS INVESTMENTS LTD·Filed 1997·Granted May 4, 1999·64 cites·20 claims
- 4383US7168299B2Heat spreader for rotary rheometerWATERS INVESTMENTS LTD·Filed 2005·Granted Jan 30, 2007·9 cites·21 claims
- 4483US7025497B2Differential scanning calorimeter accounting for heat leakageWATERS INVESTMENTS LTD·Filed 2004·Granted Apr 11, 2006·16 cites·15 claims
- 4582US6613224B1Liquid separation column smart cartridgeWATERS INVESTMENTS LTD·Filed 2000·Granted Sep 2, 2003·31 cites·9 claims
- 4682US5897781AActive pump phasing to enhance chromatographic reproducibilityWATERS INVESTMENTS LTD·Filed 1997·Granted Apr 27, 1999·54 cites·13 claims
- 4781US7594429B2System and method for improved optical measurements during rheometric measurementsWATERS INVESTMENTS LTD·Filed 2006·Granted Sep 29, 2009·9 cites·22 claims
- 4881US7416328B2System and method for a thermogravimetric analyzer having improved dynamic weight baselineWATERS INVESTMENTS LTD·Filed 2005·Granted Aug 26, 2008·6 cites·38 claims
- 4981US6780315B2Backflow prevention for high pressure gradient systemsWATERS INVESTMENTS LTD·Filed 2002·Granted Aug 24, 2004·18 cites·10 claims
- 5081US6525314B1Compact high-performance mass spectrometerWATERS INVESTMENTS LTD·Filed 1999·Granted Feb 25, 2003·37 cites·20 claims
Showing the top 50 of 169 patent records by PatentIndex Score.
Join the waitlist — get patent alerts
Get an alert when WATERS INVESTMENTS LTD files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →