Portfolio comparison
Theophilus Van Kannel vs Southwest Research Institute SwRI
Side-by-side portfolio analysis — patents indexed, year ranges, and activity timeline.
Top Patents1 enriched
US 387571· 1888
How the Revolving Door Was Invented
Activity by Decade
1880s1
Company B
Southwest Research Institute SwRI
Patents indexed
1
Year range
2007
Most recent
2007
telecommunicationssemiconductorsmechanical
Top Patents1 enriched
US RE39833· 2007
Using Heat to Move Tiny Mirrors for Controlling Light Beams
Activity by Decade
2000s1
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