Portfolio comparison
Sumitomo Electric Industries vs Exxon Research and Engineering Co
Side-by-side portfolio analysis — patents indexed, year ranges, and activity timeline.
Company A
Sumitomo Electric Industries
Patents indexed
1
Year range
2022
Most recent
2022
telecommunicationssemiconductorsconsumer_electronics
Top Patents1 enriched
US 11480727· 2022
How a Multi-Core Optical Fiber Reduces Signal Interference
Activity by Decade
2020s1
Company B
Exxon Research and Engineering Co
Patents indexed
1
Year range
1977
Most recent
1977
consumer_electronicssemiconductorsenergymaterialschemical
Top Patents1 enriched
US 4009052· 1977
Early Lithium-Ion Battery Design Using Chalcogenides
Activity by Decade
1970s1
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