Portfolio comparison
Central Investment Corp vs Canon Inc
Side-by-side portfolio analysis — patents indexed, year ranges, and activity timeline.
Company A
Central Investment Corp
Patents indexed
1
Year range
1973
Most recent
1973
consumer_electronicsmechanical
Top Patents1 enriched
US 3735375· 1973
How Vacuum Tubes Detect Tiny Changes in High-Resistance Sensors
Activity by Decade
1970s1
Company B
Canon Inc
Patents indexed
2
Year range
1988 – 2022
Most recent
2022
consumer_electronicsmechanicalsemiconductorsenergy
Top Patents2 enriched
US 4723129· 1988
How Canon's Bubble Jet Printers Make Ink Droplets
US RE48925· 2022
How Printers Manage Power States and Sleep Timers
Activity by Decade
1980s1
2020s1
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