Portfolio comparison
Hovercraft Development Ltd vs Mitsubishi Heavy Industries
Side-by-side portfolio analysis — patents indexed, year ranges, and activity timeline.
Company A
Hovercraft Development Ltd
Patents indexed
1
Year range
1967
Most recent
1967
automotiveaerospacemechanicaltransportation
Top Patents1 enriched
US 3321037· 1967
How Hovercrafts Use Flexible Skirts to Ride on Air
Activity by Decade
1960s1
Company B
Mitsubishi Heavy Industries
Patents indexed
1
Year range
2015
Most recent
2015
energymechanicalaerospacematerials
Top Patents1 enriched
US 8932024· 2015
Wind Turbine Blades with Noise-Reducing Serrated Edges
Activity by Decade
2010s1
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