Portfolio comparison
F Hoffmann La Roche AG vs Energy Partners Inc
Side-by-side portfolio analysis — patents indexed, year ranges, and activity timeline.
Top Patents1 enriched
US 3927193· 1975
Using Radioactive Antibodies to Find Tumors Inside the Body
Activity by Decade
1970s1
Top Patents1 enriched
US 5346778· 1994
Boosting Fuel Cell Power for Vehicles Using Oxygen Injection
Activity by Decade
1990s1
How to use
Bookmark a comparison URL to save it. Format: /compare/companies?a=[slug]&b=[slug]. Also see patent-level comparison.