Inventor · disambiguated record
John L. Duffy
Also filed as: DUFFY JOHN L
4 granted patents·100 citations·filing 1998–2013
78Inventor score
Top patents by PatentIndex Score
4 records- 0192US8626118B2System and method for authorizing and monetizing collect cellular telephone callsSMITH MARK R·Filed 2012·Granted Jan 7, 2014·57 cites·32 claims
- 0286US8190121B2System and method for authorizing and monetizing collect cellular telephone callsSMITH MARK R·Filed 2008·Granted May 29, 2012·19 cites·59 claims
- 0352US9037110B2System and method for authorizing and monetizing a telephone callSECURUS TECHNOLOGIES INC·Filed 2013·Granted May 19, 2015·0 cites·71 claims
- 0430US6064375AMerchant analysis support methodFIRST DATA CORP·Filed 1998·Granted May 16, 2000·24 cites·1 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →