Portfolio comparison
Lewis E. Waterman vs Ricoh Co Ltd
Side-by-side portfolio analysis — patents indexed, year ranges, and activity timeline.
Company A
Lewis E. Waterman
Patents indexed
1
Year range
1884
Most recent
1884
mechanicalconsumer_goodsmanufacturing
Top Patents1 enriched
US 293545· 1884
How Lewis Waterman's Original Fountain Pen Design Worked
Activity by Decade
1880s1
Top Patents1 enriched
US 6476836· 2002
How Printers Save Toner by Dropping Light-Colored Pixels
Activity by Decade
2000s1
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