Inventor · disambiguated record
David R. Walker
Also filed as: WALKER DAVID · WALKER DAVID R · WALKER DAVID R B · WALKER DAVID RAY
28 granted patents·6 pending applications·874 citations·filing 1986–2019
97Inventor score
Files withCOMBUSTION DESIGN CORP4DXRESOURCES CORP3MEADWESTVACO CORP3SERAWASTE SYSTEMS CORP3DOW CHEMICAL CO2
Top patents by PatentIndex Score
34 records- 0196US4765897APolyamide membranes useful for water softeningDOW CHEMICAL CO·Filed 1986·Granted Aug 23, 1988·138 cites·31 claims
- 0295US6573212B2Method of making shaped activated carbonMEADWESTVACO CORP·Filed 2001·Granted Jun 3, 2003·85 cites·17 claims
- 0393US6696384B2Method of making shaped activated carbonMEADWESTVACO CORP·Filed 2001·Granted Feb 24, 2004·68 cites·13 claims
- 0493US6472343B1Shaped activated carbonWESTVACO CORP·Filed 2001·Granted Oct 29, 2002·67 cites·12 claims
- 0590US5476550AMethod and apparatus for extracting soluble and dispersible materials from products using a slotted scroll extractorDXRESOURCES CORP·Filed 1995·Granted Dec 19, 1995·38 cites·22 claims
- 0690US4812270ANovel water softening membranesFILMTEC CORP·Filed 1988·Granted Mar 14, 1989·72 cites·10 claims
- 0785US5262056APolyamides and polypyrrolones for fluid separation membranesUNIV TEXAS·Filed 1992·Granted Nov 16, 1993·55 cites·2 claims
- 0882US7179382B2Coated activated carbon for automotive emission controlMEADWESTVACO CORP·Filed 2002·Granted Feb 20, 2007·14 cites·20 claims
- 0981US6556744B1Reduction of dispersion effects in optical transmission fibre systemsNORTEL NETWORKS LTD·Filed 2001·Granted Apr 29, 2003·27 cites·20 claims
- 1081US4824574ANovel water softening process using membranesDOW CHEMICAL CO·Filed 1988·Granted Apr 25, 1989·46 cites·9 claims
- 1178US9446326B2Method and apparatus for ethanol productionDX RESOURCES LLC·Filed 2014·Granted Sep 20, 2016·4 cites·19 claims
- 1273US9034429B2Method for patterning a surface using selective adhesionBRYAN-BROWN GUY PETER·Filed 2009·Granted May 19, 2015·6 cites·20 claims
- 1372US5052313AWaste treatment system and methodCOMBUSTION DESIGN CORP·Filed 1990·Granted Oct 1, 1991·22 cites·29 claims
- 1471US6106673AMethod for separating components of a fermentation process byproduct containing oil bound with fibersCDC ENVIRONMENTAL CORP·Filed 1998·Granted Aug 22, 2000·41 cites·29 claims
- 1571US5285581AMethod for drying waste materialsCOMBUSTION DESIGN CORP·Filed 1991·Granted Feb 15, 1994·20 cites·31 claims
- 1671US5054405AHigh temperature turbulent gasification unit and methodSERAWASTE SYSTEMS CORP·Filed 1990·Granted Oct 8, 1991·32 cites·30 claims
- 1770US5326538AClosed sterilization system for treating a product such as toxic or infectious wasteSERAWASTE SYSTEMS CORP·Filed 1991·Granted Jul 5, 1994·30 cites·16 claims
- 1865US11046925B2System and process for producing biogas from an ethanol slurry mixDX RESOURCES LLC·Filed 2019·Granted Jun 29, 2021·0 cites·18 claims
- 1964USD699141SRFID tagWALKER DAVID·Filed 2012·Granted Feb 11, 2014·13 cites·1 claims
- 2057US5137545AVapor clarification system and methodCOMBUSTION DESIGN CORP·Filed 1990·Granted Aug 11, 1992·14 cites·18 claims
- 2154US5114684AIn-line electromagnetic energy wave applicatorSERAWASTE SYSTEMS CORP·Filed 1990·Granted May 19, 1992·42 cites·74 claims
- 2252US7746179B1Method and apparatus for selecting a frequency generating elementRF MICRO DEVICES INC·Filed 2007·Granted Jun 29, 2010·3 cites·32 claims
- 2346US5409541AMethod and apparatus for extracting soluble and dispersible materials from products using a slotted scroll extractorDXRESOURCES CORP·Filed 1993·Granted Apr 25, 1995·13 cites·25 claims
- 2446US2005123763A1Colored activated carbon and method of preparationFiled 2004·Application pending·0 cites
- 2546US2010216667A1Method for determining compatibility of an active pharmaceutical ingredient with materialsMEYER BRIAN K·Filed 2009·Application pending·0 cites
- 2646US2005035062A1Coated activated carbon for contaminant removal from a fluid streamFiled 2004·Application pending·0 cites
- 2744US5520780AMethod and apparatus for de-inking newsprint using counterflow extractorDXRESOURCES CORP·Filed 1993·Granted May 28, 1996·10 cites·19 claims
- 2843US6136077ASteam absorption apparatusFiled 1998·Granted Oct 24, 2000·12 cites·24 claims
- 2941US2007122609A1Porous coatings on adsorbent materialsHILTZIK LAURENCE H·Filed 2007·Application pending·0 cites
- 3039US6457348B1High pressure steam line target inserterONYX IND SERVICES INC·Filed 2001·Granted Oct 1, 2002·0 cites·20 claims
- 3139US2002160179A1PaperboardWESTVACO CORP·Filed 2002·Application pending·0 cites
- 3237US2002114597A1Method and apparatus for reducing dispersion slope in optical transmission fibre systemsNORTEL NETWORKS LTD·Filed 2000·Application pending·0 cites
- 3333US8674714B2System and method for probing work piecesKITAI ANTON THEODORE·Filed 2008·Granted Mar 18, 2014·0 cites·21 claims
- 3431US5080581AMethod and apparatus for drying waste materialsCOMBUSTION DESIGN CORP·Filed 1990·Granted Jan 14, 1992·2 cites·11 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →