Portfolio comparison
Zenith Radio Corp vs OpenTV Inc
Side-by-side portfolio analysis — patents indexed, year ranges, and activity timeline.
Company A
Zenith Radio Corp
Patents indexed
1
Year range
1957
Most recent
1957
consumer_electronicsmechanical
Top Patents1 enriched
US 2817025· 1957
How the First Wireless Television Remote Control Works
Activity by Decade
1950s1
Company B
OpenTV Inc
Patents indexed
1
Year range
2013
Most recent
2013
consumer_electronicstelecommunicationssoftware
Top Patents1 enriched
US RE44685· 2013
How Interactive Television Systems Send Applications Alongside Video Streams
Activity by Decade
2010s1
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