Portfolio comparison
James L. Plimpton vs Mitsubishi Heavy Industries Machinery Systems Co Ltd
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
Mitsubishi Heavy Industries Machinery Systems Co Ltd
Patents indexed
1
Year range
2021
Most recent
2021
telecommunicationsautomotivesoftware
Top Patents1 enriched
US RE48406· 2021
How Vehicles Send Data Without Revealing Who Is Driving
Activity by Decade
2020s1
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