Inventor · disambiguated record
Douglas P. Wittmer
Also filed as: WITTMER DOUGLAS · WITTMER DOUGLAS P
7 granted patents·1 pending application·357 citations·filing 1976–2013
85Inventor score
Files withWATERS TECHNOLOGIES CORP3MILLIPORE CORP2WATER INVEST LTD1WATERS ASSOCIATES INC1WITTMER DOUGLAS1
Top patents by PatentIndex Score
8 records- 0193US5223226AInsulated needle for forming an electrosprayMILLIPORE CORP·Filed 1992·Granted Jun 29, 1993·241 cites·10 claims
- 0288US5306910ATime modulated electrified spray apparatus and processMILLIPORE CORP·Filed 1992·Granted Apr 26, 1994·71 cites·18 claims
- 0371US4042327AIon-pairing chromatographyWATERS ASSOCIATES INC·Filed 1976·Granted Aug 16, 1977·21 cites·17 claims
- 0468US6140640AElectrospray deviceWATER INVEST LTD·Filed 1999·Granted Oct 31, 2000·23 cites·14 claims
- 0562US9764251B2Introducing samples into supercritical fluid chromatography systemsWATERS TECHNOLOGIES CORP·Filed 2013·Granted Sep 19, 2017·1 cites·20 claims
- 0650US10183238B2Flow splitting in supercritical fluid chromatography systemsWATERS TECHNOLOGIES CORP·Filed 2013·Granted Jan 22, 2019·0 cites·9 claims
- 0747US9027635B2Heat exchange surface including a hydrophobic coating layerWITTMER DOUGLAS·Filed 2005·Granted May 12, 2015·0 cites·2 claims
- 0846US2013134079A1Mobile phase solvent delivery moduleWATERS TECHNOLOGIES CORP·Filed 2012·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →