Portfolio comparison
Chiron Ophthalmics Inc vs ELECTRO STRING INSTR CORP
Side-by-side portfolio analysis — patents indexed, year ranges, and activity timeline.
Company A
Chiron Ophthalmics Inc
Patents indexed
1
Year range
1993
Most recent
1993
pharmaceuticalbiotechmaterials
Top Patents1 enriched
US 5272135· 1993
Preventing Protein Damage with Extra Methionine
Activity by Decade
1990s1
Company B
ELECTRO STRING INSTR CORP
Patents indexed
1
Year range
1937
Most recent
1937
consumer_electronicsmechanical
Top Patents1 enriched
US 2089171· 1937
How the Frying Pan Guitar Created the Electric Guitar
Activity by Decade
1930s1
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