Inventor · disambiguated record
Walter Szrek
Also filed as: SZREK WALTER
15 granted patents·4 pending applications·1,299 citations·filing 1998–2012
95Inventor score
Top patents by PatentIndex Score
19 records- 0196US6752319B2Lottery game tickets and methods for making sameHAND HELD PROD INC·Filed 2001·Granted Jun 22, 2004·191 cites·13 claims
- 0295US6419157B1Methods for processing security documentsHAND HELD PROD INC·Filed 2000·Granted Jul 16, 2002·168 cites·47 claims
- 0391US6405929B1Material detection systems for security documentsHAND HELD PROD INC·Filed 1998·Granted Jun 18, 2002·162 cites·41 claims
- 0491US6186404B1Security document voiding systemWELCH ALLYN DATA COLLECTION·Filed 1998·Granted Feb 13, 2001·170 cites·16 claims
- 0586US7749080B2Method and system for authenticationGTECH CORP·Filed 2005·Granted Jul 6, 2010·19 cites·74 claims
- 0683US6304660B1Apparatuses for processing security documentsWELCH ALLYN DATA COLLECTION·Filed 1998·Granted Oct 16, 2001·81 cites·44 claims
- 0782US6934846B2Method of generating unpredictable and auditable random numbersFiled 2003·Granted Aug 23, 2005·76 cites·59 claims
- 0876US5935000ASecure gaming ticket and validation method for sameGTECH CORP·Filed 1998·Granted Aug 10, 1999·210 cites·35 claims
- 0975US7303134B2Lottery game tickets and methods for making sameEHRHART MICHAEL A·Filed 2004·Granted Dec 4, 2007·14 cites·19 claims
- 1067US6368219B1System and method for determining whether wagers have been altered after winning game numbers are drawnGTECH CORP·Filed 1999·Granted Apr 9, 2002·107 cites·21 claims
- 1164US8182327B2Management of outcomes of games of chanceSZREK WALTER·Filed 2008·Granted May 22, 2012·1 cites·18 claims
- 1263US9196116B2Securing gaming transactionsSZREK WALTER·Filed 2007·Granted Nov 24, 2015·1 cites·15 claims
- 1363US7627497B2Method for selling lottery tickets from a POS terminalSZREK WALTER·Filed 2004·Granted Dec 1, 2009·17 cites·23 claims
- 1461US6477251B1Apparatus and method for securely determining an outcome from multiple random event generatorsGTECH CORP·Filed 1998·Granted Nov 5, 2002·82 cites·30 claims
- 1552US2013151320A1Payment method and systemSZREK2SOLUTIONS LLC·Filed 2012·Application pending·0 cites
- 1651US10115097B2Protecting lottery receiptsSZREK IRENA·Filed 2008·Granted Oct 30, 2018·0 cites·12 claims
- 1749US2002084327A1Scratch-off material sensor system for lottery game ticketsWELCH ALLYN DATA COLLECTION·Filed 2001·Application pending·0 cites
- 1845US2010304852A1Method and system for authenticationGTECH CORP·Filed 2010·Application pending·0 cites
- 1933US2010240440A1Secure Provisioning of Random Numbers to Remote ClientsSZREK WALTER·Filed 2010·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →