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USPTO Patent Rankings Data through Sept 30, 2025
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Christopher Kallai — 4 Patents in 2018

SOSonos: 4 patents #29 of 131Top 25%
Midland School, CA: #25 of 115 inventorsTop 25%
California: #4,911 of 60,411 inventorsTop 9%
Overall (2018): #47,768 of 503,207Top 10%
4 Patents 2018

Issued Patents 2018

Showing 1–4 of 4 patents

Patent #TitleCo-InventorsDate
10136218 Playback device pairing Michael Darrell Andrew Ericson, Robert A. Lambourne, Robert Reimann, Mark Triplett 2018-11-20
10063202 Intelligently modifying the gain parameter of a playback device Mike Chamness, Michael Darrell Andrew Ericson 2018-08-28
10028056 Multi-channel pairing in a media system Michael Darrell Andrew Ericson, Robert A. Lambourne, Robert Reimann, Mark Triplett 2018-07-17
9928026 Making and indicating a stereo pair Michael Darrell Andrew Ericson, Robert A. Lambourne 2018-03-27