Portfolio comparison
James Ritty vs Purdue Research Foundation
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
Purdue Research Foundation
Patents indexed
1
Year range
2024
Most recent
2024
aerospacesemiconductorsmechanical
Top Patents1 enriched
US 11878818· 2024
How Tiny Water-Powered Thrusters Steer Small Satellites
Activity by Decade
2020s1
How to use
Bookmark a comparison URL to save it. Format: /compare/companies?a=[slug]&b=[slug]. Also see patent-level comparison.