Portfolio comparison
John Gorrie vs Ricoh Co Ltd
Side-by-side portfolio analysis — patents indexed, year ranges, and activity timeline.
Top Patents1 enriched
US 8080· 1851
John Gorrie's 1851 Patent for Artificial Ice Production
Activity by Decade
1850s1
Top Patents1 enriched
US 6476836· 2002
How Printers Save Toner by Dropping Light-Colored Pixels
Activity by Decade
2000s1
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