Inventor · disambiguated record
John F. Knapp
Also filed as: KNAPP JOHN F · KNAPP JOHN FRANKLYN
68 granted patents·5 pending applications·915 citations·filing 1979–2011
99Inventor score
Top patents by PatentIndex Score
73 records- 0196US4517268AProcess for magnetic image character recognitionXEROX CORP·Filed 1983·Granted May 14, 1985·56 cites·12 claims
- 0293US4563086ACopy quality monitoring for magnetic imagesXEROX CORP·Filed 1984·Granted Jan 7, 1986·38 cites·12 claims
- 0393US4556624AToner compositions with crosslinked resins and low molecular weight wax componentsXEROX CORP·Filed 1984·Granted Dec 3, 1985·39 cites·30 claims
- 0491US4578338ADevelopment process with toner composition containing low molecular weight waxesXEROX CORP·Filed 1984·Granted Mar 25, 1986·35 cites·26 claims
- 0589US6179176B1Wheelable backpackFiled 1999·Granted Jan 30, 2001·133 cites·20 claims
- 0689US4965158AToner compositions with modified charge enhancing additivesXEROX CORP·Filed 1989·Granted Oct 23, 1990·34 cites·41 claims
- 0786US6526244B1Hybrid electrophotographic apparatus for custom color printingXEROX CORP·Filed 2001·Granted Feb 25, 2003·27 cites·6 claims
- 0883US4837101ANegatively charged colored toner compositionsXEROX CORP·Filed 1988·Granted Jun 6, 1989·25 cites·18 claims
- 0982US4912005AToner and developer compositions with conductive carrier componentsXEROX CORP·Filed 1989·Granted Mar 27, 1990·23 cites·51 claims
- 1081US6684045B2Hybrid electrophotographic apparatus for custom color printingXEROX CORP·Filed 2003·Granted Jan 27, 2004·16 cites·8 claims
- 1179US5619313AMethod and apparatus for liquid image development and transferXEROX CORP·Filed 1995·Granted Apr 8, 1997·30 cites·32 claims
- 1279US5337136ATandem trilevel process color printerXEROX CORP·Filed 1992·Granted Aug 9, 1994·24 cites·11 claims
- 1378US7869739B2Two-color IOI drum module enabling N-color monochrome, highlight, full color, phototone color and extended color architecturesXEROX CORP·Filed 2009·Granted Jan 11, 2011·5 cites·20 claims
- 1477US5305064ACompact single component development system with modified toner agitator and toner dispense auger disposed thereinXEROX CORP·Filed 1993·Granted Apr 19, 1994·24 cites·8 claims
- 1576USRE33172EProcess for magnetic image character recognitionXEROX CORP·Filed 1987·Granted Feb 27, 1990·19 cites·14 claims
- 1675US7532830B2Environmental controls for operation of an electrostatographic developer unit having multiple magnetic brush rollsXEROX CORP·Filed 2006·Granted May 12, 2009·5 cites·19 claims
- 1774US5481341ARoller for controlling application of carrier liquidXEROX CORP·Filed 1993·Granted Jan 2, 1996·19 cites·51 claims
- 1872US5978630ASystem for cleaning contaminants from a vacuum assisted image conditioning rollXEROX CORP·Filed 1998·Granted Nov 2, 1999·26 cites·16 claims
- 1972US5873014ASystem for purging contaminants from a vacuum assisted image conditioning rollXEROX CORP·Filed 1998·Granted Feb 16, 1999·21 cites·24 claims
- 2072US5387967ASingle-component electrophotographic development systemXEROX CORP·Filed 1993·Granted Feb 7, 1995·16 cites·4 claims
- 2170US5519473ALiquid developing material applicatorXEROX CORP·Filed 1995·Granted May 21, 1996·20 cites·21 claims
- 2269US4609603AProcess for achieving consistent high quality images with magnetic developer compositionXEROX CORP·Filed 1984·Granted Sep 2, 1986·14 cites·29 claims
- 2368US4879199AProcess for preparing encapsulated color toner compositionsXEROX CORP·Filed 1988·Granted Nov 7, 1989·14 cites·24 claims
- 2467US7962085B2Metal blade cleaning of an amorphous silicon receptorXEROX CORP·Filed 2009·Granted Jun 14, 2011·2 cites·18 claims
- 2567US5212522ABasic developability control in single component development systemXEROX CORP·Filed 1992·Granted May 18, 1993·15 cites·14 claims
- 2665US6580882B2Low cost trim-gap-conductivity TC sensorXEROX CORP·Filed 2001·Granted Jun 17, 2003·9 cites·12 claims
- 2764US7706728B2Apparatus and methods for loading a donor roll utilizing a slow speed trim rollXEROX CORP·Filed 2007·Granted Apr 27, 2010·2 cites·23 claims
- 2864US4695524AProcess for ultra high quality images with magnetic developer compositionXEROX CORP·Filed 1986·Granted Sep 22, 1987·13 cites·29 claims
- 2963US8897683B2Fixing systems including image conditioner and image pre-heater and methods of fixing marking material to substratesCHANG SHU·Filed 2010·Granted Nov 25, 2014·1 cites·13 claims
- 3063US8265504B2Imaging system with pressure fixing and separate thermal fixing of marking materials on mediaCHANG SHU·Filed 2010·Granted Sep 11, 2012·1 cites·23 claims
- 3163US7660551B2Apparatus and methods for loading a donor rollXEROX CORP·Filed 2007·Granted Feb 9, 2010·2 cites·16 claims
- 3263US6682865B2Hybrid electrophotographic apparatus for custom color printingXEROX CORP·Filed 2001·Granted Jan 27, 2004·7 cites·5 claims
- 3362US5574547ALiquid electrophotographic reproduction machine employing heated carrier liquidXEROX CORP·Filed 1995·Granted Nov 12, 1996·15 cites·10 claims
- 3461US4618243AApparatus for color development with a magnetic separator containing a stationary shell with rotating magnetsXEROX CORP·Filed 1984·Granted Oct 21, 1986·10 cites·10 claims
- 3560US6223013B1Wire-less hybrid scavengeless development systemXEROX CORP·Filed 1998·Granted Apr 24, 2001·14 cites·7 claims
- 3659US8000635B2Developer homogenizer for multi-engine printing systemXEROX CORP·Filed 2008·Granted Aug 16, 2011·1 cites·22 claims
- 3759US5666617ALid machine having a differential air pressure assisted blotting deviceXEROX CORP·Filed 1996·Granted Sep 9, 1997·14 cites·9 claims
- 3857US4634649ADeveloper compositionsXEROX CORP·Filed 1985·Granted Jan 6, 1987·10 cites·16 claims
- 3956US8620700B2Management of new offering development via value flow controlDUKE CHARLES B·Filed 2005·Granted Dec 31, 2013·1 cites·17 claims
- 4056US5012287ACompact two-component development system with zonal toner dispenser controlXEROX CORP·Filed 1990·Granted Apr 30, 1991·10 cites·18 claims
- 4155US4920023AStable color developer compositions and process for the preparation thereofXEROX CORP·Filed 1988·Granted Apr 24, 1990·9 cites·22 claims
- 4254US8854686B2Digital printing systems for packaging and document printing with special colorsBREWINGTON GRACE T·Filed 2009·Granted Oct 7, 2014·0 cites·20 claims
- 4354US5121171AHybrid color printing machineXEROX CORP·Filed 1991·Granted Jun 9, 1992·10 cites·7 claims
- 4453US5077578ADevelopment systemXEROX CORP·Filed 1991·Granted Dec 31, 1991·9 cites·18 claims
- 4553US5047806AMeterless single component developmentXEROX CORP·Filed 1990·Granted Sep 10, 1991·9 cites·20 claims
- 4651US5634170AMethod and apparatus for sensing and cleaning developer fluidXEROX CORP·Filed 1996·Granted May 27, 1997·9 cites·20 claims
- 4748US7881647B2Xerographic imaging modules, xerographic apparatuses, and methods of making xerographic imaging modulesXEROX CORP·Filed 2008·Granted Feb 1, 2011·0 cites·18 claims
- 4847US5848337AElectrical biasing scheme for preventing overplating in an image-on-image electrostatographic printing systemXEROX CORP·Filed 1997·Granted Dec 8, 1998·8 cites·9 claims
- 4947US5493370ASingle-component electrophotographic development systemXEROX CORP·Filed 1994·Granted Feb 20, 1996·6 cites·18 claims
- 5046US5604075ALiquid developer compositions and processesXEROX CORP·Filed 1995·Granted Feb 18, 1997·7 cites·31 claims
Showing the top 50 of 73 patent records by PatentIndex Score.
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