Portfolio comparison
ELECTRO STRING INSTR CORP vs Hoffmann La Roche Inc
Side-by-side portfolio analysis — patents indexed, year ranges, and activity timeline.
Company A
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
Company B
Hoffmann La Roche Inc
Patents indexed
3
Year range
1993 – 2018
Most recent
2018
biotechpharmaceuticaldiagnosticsmedical_deviceslife_sciences
Top Patents3 enriched
US 5210015· 1993
How an Enzyme Helps Find Specific DNA in a Sample
US 5176995· 1993
Using PCR to Detect Viruses in Blood and Tissue Samples
US 10138293· 2018
How Roche Engineers Antibodies to Target Two Different Diseases Simultaneously
Activity by Decade
1990s2
2010s1
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