Inventor

Lawrence E. DeMar

Inventor

Winnetka, IL, US

Overview

38→

Patents

1987–2013

Patent span

Physics

Primary field (CPC G)

Patents· 38 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

G07Fprimary

G07FCoin-freed or like apparatus47%

A63FCard, board, or roulette games30%

A63DBowling games, e.g. skittles, bocce or bowls5%

G06FElectric digital data processing5%

G09GArrangements or circuits for control of indicating devices using static means to present variable information5%

G06QInformation and communication technology [ict] specially adapted for administrative, commercial, financial, managerial or supervisory purposes4%

H05BElectric heating2%

Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests2%

PatentTitleYear

8,517,812'Computerized game with cascading strategy and full information'2013 8,192,270'Bingo game, method, and elimination tournament'2012 8,187,068'System and method of an interactive multiple participant game'2012 8,113,941'Chain reaction game'2012 8,038,522'Spin keno'2011 7,811,165'Multi-stage multi-bet dice game, gaming device, and method'2010 7,452,271'Gaming machines with board game theme'2008 7,407,434'Method and apparatus for a secondary game played in conjunction with a primary game'2008 7,294,058'Computerized game with cascading strategy and full information'2007 7,267,611'Bunco gaming device, method and bonus game'2007 7,195,560'Gaming machines with board game theme'2007 7,144,322'Chain reaction game'2006 7,018,293'Game and gaming machine with operative theme having element linking logic organization'2006 6,926,607'Multi-stage multi-bet game, gaming device and method'2005 6,793,575'Racing game'2004 6,780,106'Gaming machine souvenir'2004 6,612,927'Multi-stage multi-bet game, gaming device and method'2003 6,520,855'Gaming machines with board game theme'2003 6,508,707'Gaming machines with board game theme, apparatus and method'2003 6,506,117'Gaming machines with board game theme'2003 6,482,089'Gaming machines with board game theme'2002 6,315,660'Gaming machines with board game theme'2001 6,234,897'Gaming device with variable bonus payout feature'2001 6,203,429'Gaming machine with bonus mode'2001 6,129,353'Method of displaying video images projected from a video display of a pinball machine'2000 5,533,727'Audit and pricing system for coin-operated games'1996 5,494,286'Ball advancing device for a pinball game'1996 5,446,894'Method for varying multi-tasking time slice to maintain system frame operating time close to desired time upon video frame refresh time'1995 5,375,829'Magnetic ball flipper for a rolling ball game'1994 5,297,793'Automatic flipper control circuit for pinball games'1994 5,257,179'Audit and pricing system for coin-operated games'1993 5,255,185'Bowling center video display system'1993 5,123,647'Interactive playfield feature for pinball games'1992 5,101,354'Multi-lane bowling system with remote operator control'1992 5,091,677'Lighting control system for pinball games'1992 4,840,375'Pinball machine'1989 4,763,256'System to detect and bypass inoperative game features in an amusement device'1988 4,685,677'Automatic replay control system and method for amusement devices'1987

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1987–2001Based in Chicago, IL, US· patent location history

1988–2000Patents assigned to WILLIAMS ELECTRONICS GAMES INC (9)· patent assignee history

1989–2013Patents assigned to DEMAR LAWRENCE E (5)· patent assignee history

1994–2013Based in Winnetka, IL, US· patent location history

2001–2008Patents assigned to WMS GAMING INC (9)· patent assignee history

2003–2013Patents assigned to CASE VENTURE MAN LLC (14)· patent assignee history

2012–2013Patents assigned to BROWN DUNCAN F (4)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
CASE VENTURE MAN LLC	14	2003–2013
WILLIAMS ELECTRONICS GAMES INC	9	1988–2000
WMS GAMING INC	9	2001–2008
DEMAR LAWRENCE Eself	5	1989–2013
BROWN DUNCAN F	4	2012–2013

Locations

Location	Patents	Span
Winnetka, Illinois, US	27	1994–2013
Chicago, Illinois, US	11	1987–2001