Inventor · disambiguated record
John D. Francis
Also filed as: FRANCIS JOHN · FRANCIS JOHN D
5 granted patents·22 citations·filing 2000–2015
73Inventor score
Top patents by PatentIndex Score
5 records- 0181US7831025B1Method and system for administering subjective listening test to remote usersAT & T IP II LP·Filed 2006·Granted Nov 9, 2010·11 cites·20 claims
- 0279US7738643B1Method for troubleshooting echo on teleconference bridgeAT & T CORP·Filed 2006·Granted Jun 15, 2010·10 cites·20 claims
- 0345US6480576B1Method and device for detecting path faults in a networkAT & T CORP·Filed 2000·Granted Nov 12, 2002·1 cites·22 claims
- 0444US9420080B2Method and apparatus for providing privacy for telephone conversationsAT & T IP II LP·Filed 2015·Granted Aug 16, 2016·0 cites·19 claims
- 0544US9178478B2Method and apparatus for providing privacy for telephone conversationsCHEN BING·Filed 2007·Granted Nov 3, 2015·0 cites·17 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →