Inventor

DUFFY JOHN L

US4 patents

⚠️ This page may combine multiple inventors who share the name “DUFFY JOHN L”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

SMITH MARK R

2 patents

US8626118B2Jan 7, 2014

System and method for authorizing and monetizing collect cellular telephone calls

SMITH MARK R57 citations93

US8190121B2May 29, 2012

System and method for authorizing and monetizing collect cellular telephone calls

SMITH MARK R19 citations88

FIRST DATA CORP

1 patent

US6064375AMay 16, 2000

Merchant analysis support method

FIRST DATA CORP24 citations83

SECURUS TECHNOLOGIES INC

1 patent

US9037110B2May 19, 2015

System and method for authorizing and monetizing a telephone call

SECURUS TECHNOLOGIES INC0 citations48