Inventor
PIECHOWIAK ROBERT J
US13 patents
⚠️ This page may combine multiple inventors who share the name “PIECHOWIAK ROBERT J”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
SIGMA GAME INC
8 patentsUS6168523B1Jan 2, 2001
Bonus award feature in a gaming machine
SIGMA GAME INC959 citations98
US6012982AJan 11, 2000
Bonus award feature in linked gaming machines having a common feature controller
SIGMA GAME INC1,220 citations98
US5807172ASep 15, 1998
Three reel slot machine with nine ways to win
SIGMA GAME INC687 citations98
US5580309ADec 3, 1996
Linked gaming machines having a common feature controller
SIGMA GAME INC772 citations98
US6595856B1Jul 22, 2003
Electronic security technique for gaming software
SIGMA GAME INC231 citations96
US6110040AAug 29, 2000
Video poker machine with revealed sixth card
SIGMA GAME INC105 citations95
US6558253B1May 6, 2003
Slot machine with award multiplier display
SIGMA GAME INC155 citations94
US6755737B2Jun 29, 2004
Gaming machine having bonus game
SIGMA GAME INC46 citations89
MULTIMEDIA GAMES INC
3 patentsUS7481430B1Jan 27, 2009
Slot machine having multiple progressive jackpots
MULTIMEDIA GAMES INC131 citations98
US6984173B1Jan 10, 2006
Slot machine using a count valve to award bonus game
MULTIMEDIA GAMES INC176 citations98
US8348754B2Jan 8, 2013
Slot machine having multiple progressive jackpots
MULTIMEDIA GAMES INC16 citations92