Portfolio comparison
Walter Hunt vs Sony Group Corp
Side-by-side portfolio analysis — patents indexed, year ranges, and activity timeline.
Top Patents1 enriched
US 6281· 1849
How Walter Hunt Invented the Modern Safety Pin
Activity by Decade
1840s1
Company B
Sony Group Corp
Patents indexed
1
Year range
2025
Most recent
2025
consumer_electronicssemiconductorstelecommunications
Top Patents1 enriched
US RE50510· 2025
How to Embed Tiny Optical Components Directly into Circuit Boards
Activity by Decade
2020s1
How to use
Bookmark a comparison URL to save it. Format: /compare/companies?a=[slug]&b=[slug]. Also see patent-level comparison.