Inventor · disambiguated record
Matthew M. Campbell
Also filed as: CAMPBELL MATTHEW · CAMPBELL MATTHEW M
6 granted patents·5 citations·filing 2006–2023
74Inventor score
Top patents by PatentIndex Score
6 records- 0181US11451867B2Methods and apparatus to monitor digital mediaNIELSEN CO US LLC·Filed 2020·Granted Sep 20, 2022·1 cites·20 claims
- 0281US10880600B2Methods and apparatus to monitor digital mediaNIELSEN CO US LLC·Filed 2018·Granted Dec 29, 2020·2 cites·20 claims
- 0375US12375760B2Methods and apparatus to monitor digital mediaNIELSEN CO US LLC·Filed 2023·Granted Jul 29, 2025·0 cites·20 claims
- 0471US11838584B2Methods and apparatus to monitor digital mediaNIELSEN CO US LLC·Filed 2022·Granted Dec 5, 2023·0 cites·20 claims
- 0551US8737579B2Methods of routing messages using a listener registryJOHNSON BRETT DENNIS·Filed 2006·Granted May 27, 2014·2 cites·6 claims
- 0650US9191347B2Methods of routing messages using a listener registryAT & T IP I LP·Filed 2014·Granted Nov 17, 2015·0 cites·11 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →