Portfolio comparison
Sperry Gyroscope Co Inc vs Tehram
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
Tehram
Patents indexed
1
Year range
2016
Most recent
2016
pharmaceuticalbiotechmaterialshealthcare
Top Patents1 enriched
US 9370488· 2016
Making Insulin Last Longer with Tiny Coated Drug Particles
Activity by Decade
2010s1
How to use
Bookmark a comparison URL to save it. Format: /compare/companies?a=[slug]&b=[slug]. Also see patent-level comparison.