Portfolio comparison
Epir Technologies vs John L. Mason
Side-by-side portfolio analysis — patents indexed, year ranges, and activity timeline.
Company A
Epir Technologies
Patents indexed
1
Year range
2014
Most recent
2014
semiconductorsenergymaterialsconsumer_electronics
Top Patents1 enriched
US 8912428· 2014
Solar Cells Made of Stacking Layers with Different Energy Gaps
Activity by Decade
2010s1
Top Patents1 enriched
US 22186· 1858
John Mason's 1858 Patent for the Mason Jar Lid
Activity by Decade
1850s1
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