Portfolio comparison
James L. Plimpton vs Seiko Epson
Side-by-side portfolio analysis — patents indexed, year ranges, and activity timeline.
Company A
James L. Plimpton
Patents indexed
1
Year range
1863
Most recent
1863
mechanicalconsumer_electronics
Top Patents1 enriched
US 37305· 1863
How James Plimpton Invented the Modern Roller Skate
Activity by Decade
1860s1
Company B
Seiko Epson
Patents indexed
1
consumer_electronicssemiconductorstelecommunicationsautomotiverobotics
Top Patents1 enriched
US 20110120221
How a Tiny Sensor Uses an Extra Weight to Detect Motion
How to use
Bookmark a comparison URL to save it. Format: /compare/companies?a=[slug]&b=[slug]. Also see patent-level comparison.