DS

David Jonathan Spencer

GE: 2 patents #13,562 of 36,430Top 40%
Igt: 1 patents #880 of 1,220Top 75%
Overall (All Time): #1,524,699 of 4,157,543Top 40%
3
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
9189921 Progressive value tracking and publication in gaming systems Kevin Higgins, Chad G. Little 2015-11-17
7162445 Methods and systems for quantifying cash flow recovery and risk Christopher Donald Johnson, Tim Kerry Keyes, Catharine Lynn Midkiff, Richard Paul Messmer, Chandrasekhar Pisupati +1 more 2007-01-09
7039608 Rapid valuation of portfolios of assets such as financial instruments Christopher Donald Johnson, Tim Kerry Keyes, Catharine Lynn Midkiff, Richard Paul Messmer, Chandrasekhar Pisupati +7 more 2006-05-02