Portfolio comparison
James Ritty vs University of Delaware
Side-by-side portfolio analysis — patents indexed, year ranges, and activity timeline.
Top Patents1 enriched
US 271363· 1883
How James Ritty's First Cash Register Tracked Sales
Activity by Decade
1880s1
Company B
University of Delaware
Patents indexed
1
Year range
2001
Most recent
2001
consumer_electronicssoftwaretelecommunicationssemiconductors
Top Patents1 enriched
US 6323846· 2001
How a Multi-Touch Screen Detects Multiple Fingers and Palms
Activity by Decade
2000s1
How to use
Bookmark a comparison URL to save it. Format: /compare/companies?a=[slug]&b=[slug]. Also see patent-level comparison.