Portfolio comparison
Seoul National University R&DB Foundation vs Hovercraft Development Ltd
Side-by-side portfolio analysis — patents indexed, year ranges, and activity timeline.
Company A
Seoul National University R&DB Foundation
Patents indexed
4
Year range
2017 – 2025
Most recent
2025
semiconductorsconsumer_electronicstelecommunicationssoftwareenergy
Top Patents4 enriched
US 12266789· 2025
How to Make Lithium-Sulfur Batteries Last Longer Using Polymer Coatings
US 9685235· 2017
How to Prepare 3D Flash Memory for Use
US 9947413· 2018
How to Program 3D Layered Memory Chips More Precisely
Activity by Decade
2010s2
2020s2
Company B
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
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