Portfolio comparison
Sperry Gyroscope Co Inc vs Ciba Geigy Corp
Side-by-side portfolio analysis — patents indexed, year ranges, and activity timeline.
Top Patents1 enriched
US 1242065· 1917
How Elmer Sperry Invented the Gyroscopic Compass for Ships
Activity by Decade
1910s1
Company B
Ciba Geigy Corp
Patents indexed
2
Year range
1979 – 1996
Most recent
1996
pharmaceuticalbiotechchemistryoncology
Top Patents2 enriched
US 5521184· 1996
New Pyrimidine Chemical Compounds for Treating Tumors
US 4147780· 1979
Chemical Compounds for Fighting Bacterial and Yeast Infections
Activity by Decade
1970s1
1990s1
How to use
Bookmark a comparison URL to save it. Format: /compare/companies?a=[slug]&b=[slug]. Also see patent-level comparison.