Portfolio comparison
Lewis E. Waterman vs Rohm 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
Company B
Rohm Co Ltd
Patents indexed
1
Year range
2024
Most recent
2024
semiconductorsconsumer_electronicsautomotive
Top Patents1 enriched
US RE49912· 2024
How Rohm Designs Compact Semiconductor Packages for Better Heat Management
Activity by Decade
2020s1
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