Assignee
SIGMA GAME INC
US·17 granted patents·7,153 citations·filing 1991–2001
Top patents by PatentIndex Score
17 records- 0197USD392340SDisplay glass for slot machine showing award multiplication valuesSIGMA GAME INC·Filed 1997·Granted Mar 17, 1998·102 cites·1 claims
- 0296US6012982ABonus award feature in linked gaming machines having a common feature controllerSIGMA GAME INC·Filed 1996·Granted Jan 11, 2000·1.2k cites·26 claims
- 0396US5580309ALinked gaming machines having a common feature controllerSIGMA GAME INC·Filed 1994·Granted Dec 3, 1996·772 cites·25 claims
- 0496USD344296SSlant-top gaming machineSIGMA GAME INC·Filed 1992·Granted Feb 15, 1994·94 cites·1 claims
- 0595US6595856B1Electronic security technique for gaming softwareSIGMA GAME INC·Filed 2000·Granted Jul 22, 2003·231 cites·36 claims
- 0695US6168523B1Bonus award feature in a gaming machineSIGMA GAME INC·Filed 1998·Granted Jan 2, 2001·959 cites·19 claims
- 0795US5997401ASlot machine with symbol save featureSIGMA GAME INC·Filed 1996·Granted Dec 7, 1999·1.2k cites·13 claims
- 0894US6270412B1Slot machine with symbol save featureSIGMA GAME INC·Filed 1999·Granted Aug 7, 2001·895 cites·45 claims
- 0992US5807172AThree reel slot machine with nine ways to winSIGMA GAME INC·Filed 1996·Granted Sep 15, 1998·687 cites·5 claims
- 1090USD412347SSlot machine cabinetSIGMA GAME INC·Filed 1997·Granted Jul 27, 1999·58 cites·1 claims
- 1185US6149521AVideo poker game with multiplier cardSIGMA GAME INC·Filed 1998·Granted Nov 21, 2000·539 cites·28 claims
- 1281USD344122SUpright video gaming machineSIGMA GAME INC·Filed 1992·Granted Feb 8, 1994·22 cites·1 claims
- 1377US6110040AVideo poker machine with revealed sixth cardSIGMA GAME INC·Filed 1998·Granted Aug 29, 2000·105 cites·22 claims
- 1474US6755737B2Gaming machine having bonus gameSIGMA GAME INC·Filed 2001·Granted Jun 29, 2004·46 cites·23 claims
- 1572US5129330ACurrency security boxSIGMA GAME INC·Filed 1991·Granted Jul 14, 1992·39 cites·12 claims
- 1671US6558253B1Slot machine with award multiplier displaySIGMA GAME INC·Filed 1998·Granted May 6, 2003·155 cites·27 claims
- 1743US6138814AFront loading cash box assemblySIGMA GAME INC·Filed 1998·Granted Oct 31, 2000·30 cites·11 claims
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