Inventor · disambiguated record
Michael A. Ehrhart
Also filed as: EHRHART MICHAEL · EHRHART MICHAEL A · EHRHART MICHAEL ALLAN
55 granted patents·13 pending applications·11,952 citations·filing 1996–2015
99Inventor score
Files withHAND HELD PROD INC34WELCH ALLYN INC10WELCH ALLYN DATA COLLECTION9EHRHART MICHAEL A4HAWLEY THOMAS P2
Top patents by PatentIndex Score
68 records- 0199US8794522B2Image capture apparatus and methodHAND HELD PROD INC·Filed 2013·Granted Aug 5, 2014·559 cites·17 claims
- 0299US8602309B2Bar code reading device for reading 1D or 2D bar code symbolsLONGACRE JR ANDREW·Filed 2009·Granted Dec 10, 2013·603 cites·15 claims
- 0399US7413127B2Optical reader for classifying an imageHAND HELD PROD INC·Filed 2006·Granted Aug 19, 2008·635 cites·20 claims
- 0499US7080786B2Optical reader comprising illumination assembly and solid state image sensorHAND HELD PROD INC·Filed 2004·Granted Jul 25, 2006·210 cites·21 claims
- 0599US7077321B2Portable autodiscriminating optical readerHAND HELD PROD INC·Filed 2004·Granted Jul 18, 2006·247 cites·21 claims
- 0699US7077317B2Bar code reading apparatus having one-dimensional image sensor and digital digitizerHAND HELD PROD INC·Filed 2002·Granted Jul 18, 2006·191 cites·59 claims
- 0799US7059525B2Apparatus processing two dimensional image representations for optical readingHAND HELD PROD INC·Filed 2002·Granted Jun 13, 2006·234 cites·125 claims
- 0899US6834807B2Optical reader having a color imagerHAND HELD PROD INC·Filed 2003·Granted Dec 28, 2004·279 cites·62 claims
- 0999US6722569B2Optical reader having a color imagerWELCH ALLYN DATA COLLECTION·Filed 2001·Granted Apr 20, 2004·459 cites·83 claims
- 1099US6698656B2Scanning and decoding control for an optical readerHAND HELD PROD INC·Filed 2000·Granted Mar 2, 2004·360 cites·53 claims
- 1199US6491223B1Autodiscriminating optical readerHAND HELD PROD INC·Filed 2000·Granted Dec 10, 2002·340 cites·86 claims
- 1298US8789758B2Picture taking reading apparatusHAWLEY THOMAS P·Filed 2012·Granted Jul 29, 2014·561 cites·20 claims
- 1398US8528818B2Optical reader having an imagerEHRHART MICHAEL A·Filed 2010·Granted Sep 10, 2013·600 cites·18 claims
- 1498US7726575B2Indicia reading terminal having spatial measurement functionalityHAND HELD PROD INC·Filed 2007·Granted Jun 1, 2010·693 cites·29 claims
- 1598US6832725B2Optical reader comprising multiple color illuminationHAND HELD PROD INC·Filed 2002·Granted Dec 21, 2004·967 cites·6 claims
- 1698US6601768B2Imaging module for optical reader comprising refractive diffuserWELCH ALLYN DATA COLLECTION·Filed 2001·Granted Aug 5, 2003·241 cites·41 claims
- 1798US6578766B1Data structure for an optical readerWELCH ALLYN DATA COLLECTION·Filed 2000·Granted Jun 17, 2003·183 cites·23 claims
- 1898US6015088ADecoding of real time video imagingWELCH ALLYN INC·Filed 1997·Granted Jan 18, 2000·450 cites·25 claims
- 1998US5932862AOptical reader having improved scanning-decoding featuresWELCH ALLYN INC·Filed 1996·Granted Aug 3, 1999·372 cites·58 claims
- 2098US5825006AOptical reader having improved autodiscrimination featuresWELCH ALLYN INC·Filed 1996·Granted Oct 20, 1998·414 cites·52 claims
- 2197US7878403B2Image sensor based optical readerHAND HELD PROD INC·Filed 2009·Granted Feb 1, 2011·69 cites·29 claims
- 2297US7533824B2Image sensor based optical readerHAND HELD PROD INC·Filed 2006·Granted May 19, 2009·61 cites·21 claims
- 2397US7383998B2Optical reader system comprising host processor and optical readerHAND HELD PROD INC·Filed 2005·Granted Jun 10, 2008·41 cites·44 claims
- 2497US7270274B2Imaging module comprising support post for optical readerHAND HELD PROD INC·Filed 2002·Granted Sep 18, 2007·155 cites·27 claims
- 2597US7111787B2Multimode image capturing and decoding optical readerHAND HELD PROD INC·Filed 2001·Granted Sep 26, 2006·145 cites·35 claims
- 2697US6942151B2Optical reader having decoding and image capturing functionalityWELCH ALLYN DATA COLLECTION·Filed 2002·Granted Sep 13, 2005·184 cites·24 claims
- 2797US5992744AOptical reader having multiple scanning assemblies with simultaneously decoded outputsWELCH ALLYN INC·Filed 1997·Granted Nov 30, 1999·332 cites·10 claims
- 2897US5929418AOptical reader having improved menuing featuresWELCH ALLYN INC·Filed 1996·Granted Jul 27, 1999·364 cites·59 claims
- 2997US5900613AOptical reader having improved reprogramming featuresWELCH ALLYN INC·Filed 1996·Granted May 4, 1999·342 cites·5 claims
- 3096US7546954B2Bar code reading device for reading 1D or 2D bar code symbolsHAND HELD PROD INC·Filed 2006·Granted Jun 16, 2009·29 cites·23 claims
- 3196US6752319B2Lottery game tickets and methods for making sameHAND HELD PROD INC·Filed 2001·Granted Jun 22, 2004·191 cites·13 claims
- 3296US5965863AOptical reader system comprising local host processor and optical readerWELCH ALLYN INC·Filed 1997·Granted Oct 12, 1999·281 cites·35 claims
- 3395US7104456B2Reprogrammable optical readerHAND HELD PROD INC·Filed 2000·Granted Sep 12, 2006·59 cites·64 claims
- 3495US6419157B1Methods for processing security documentsHAND HELD PROD INC·Filed 2000·Granted Jul 16, 2002·168 cites·47 claims
- 3593US10049346B2Medical device maintenance systemWELCH ALLYN INC·Filed 2015·Granted Aug 14, 2018·27 cites·20 claims
- 3693US9076054B2Image sensor based optical readerHAND HELD PROD INC·Filed 2013·Granted Jul 7, 2015·13 cites·19 claims
- 3793US8292180B2Optical reader having an imagerEHRHART MICHAEL A·Filed 2011·Granted Oct 23, 2012·18 cites·14 claims
- 3893US7637430B2Picture taking optical readerHAND HELD PROD INC·Filed 2004·Granted Dec 29, 2009·73 cites·16 claims
- 3993US7124948B2Optical reader processing two-dimensional electronic representationsHAND HELD PROD INC·Filed 2004·Granted Oct 24, 2006·47 cites·49 claims
- 4093US6155491ALottery game ticket processing apparatusWELCH ALLYN DATA COLLECTION·Filed 1998·Granted Dec 5, 2000·198 cites·43 claims
- 4191US7543747B2Image capture apparatus and methodHAND HELD PROD INC·Filed 2006·Granted Jun 9, 2009·18 cites·20 claims
- 4291US6405929B1Material detection systems for security documentsHAND HELD PROD INC·Filed 1998·Granted Jun 18, 2002·162 cites·41 claims
- 4391US6186404B1Security document voiding systemWELCH ALLYN DATA COLLECTION·Filed 1998·Granted Feb 13, 2001·170 cites·16 claims
- 4487US8297511B2Picture taking optical readerHAWLEY THOMAS·Filed 2012·Granted Oct 30, 2012·11 cites·24 claims
- 4587US7686222B2Optical reader having a color imagerHAND HELD PROD INC·Filed 2008·Granted Mar 30, 2010·16 cites·15 claims
- 4685US7287697B2Optical reader having a color imagerHAND HELD PROD INC·Filed 2004·Granted Oct 30, 2007·35 cites·32 claims
- 4783US7387253B1Optical reader system comprising local host processor and optical readerHAND HELD PROD INC·Filed 1999·Granted Jun 17, 2008·34 cites·62 claims
- 4883US6304660B1Apparatuses for processing security documentsWELCH ALLYN DATA COLLECTION·Filed 1998·Granted Oct 16, 2001·81 cites·44 claims
- 4982US8104686B2Apparatus comprising image sensorHAWLEY THOMAS P·Filed 2009·Granted Jan 31, 2012·8 cites·28 claims
- 5076US9195868B2Optical reader having an imagerHAND HELD PROD INC·Filed 2013·Granted Nov 24, 2015·3 cites·11 claims
Showing the top 50 of 68 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →