Portfolio comparison
Sperry Corp vs Digimarc Corp
Side-by-side portfolio analysis — patents indexed, year ranges, and activity timeline.
Company A
Sperry Corp
Patents indexed
1
Year range
1985
Most recent
1985
softwaretelecommunicationsconsumer_electronics
Top Patents1 enriched
US 4558302· 1985
How Computers Compress Data Using Dictionary Building
Activity by Decade
1980s1
Company B
Digimarc Corp
Patents indexed
1
Year range
2003
Most recent
2003
softwareconsumer_electronicsai_ml
Top Patents1 enriched
US 6567533· 2003
How Digital Images Hide Invisible Markers to Track Rotation and Scaling
Activity by Decade
2000s1
How to use
Bookmark a comparison URL to save it. Format: /compare/companies?a=[slug]&b=[slug]. Also see patent-level comparison.