Portfolio comparison
EI Du Pont de Nemours and Co vs Energy Partners Inc
Side-by-side portfolio analysis — patents indexed, year ranges, and activity timeline.
Company A
EI Du Pont de Nemours and Co
Patents indexed
2
Year range
1938 – 1972
Most recent
1972
materials-sciencetextilespolymer-chemistrymanufacturingconsumer-goods
Top Patents2 enriched
US 2130948· 1938
Nylon — The First Synthetic Fiber, Invented at DuPont
US 3671542· 1972
Kevlar — The Fiber Five Times Stronger Than Steel, Invented by Accident
Activity by Decade
1930s1
1970s1
Company B
Energy Partners Inc
Patents indexed
1
Year range
1994
Most recent
1994
automotiveenergysemiconductors
Top Patents1 enriched
US 5346778· 1994
Fuel Cell System for Vehicles with Oxygen Boost
Activity by Decade
1990s1
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