Portfolio comparison
Dephy vs Marvin C. Stone
Side-by-side portfolio analysis — patents indexed, year ranges, and activity timeline.
Company A
Dephy
Patents indexed
1
Year range
2022
Most recent
2022
consumer_electronicsroboticsmedical_deviceswearable_technologymechanical
Top Patents1 enriched
US 11304827· 2022
Flexible Footplate for Robotic Walking Assistance
Activity by Decade
2020s1
Top Patents1 enriched
US 375962· 1888
How the Modern Paper Drinking Straw Was Invented
Activity by Decade
1880s1
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