Inventor

SOSA ROGER ALBERT

US4 patents

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

AMERITECH CORP

2 patents

US6570970B2May 27, 2003

Calling-party-pays call processing for cellular and paging

AMERITECH CORP63 citations94

US6263056B1Jul 17, 2001

Calling-party-pays call processing for cellular and paging

AMERITECH CORP30 citations91

SBC PROPERTIES LP

1 patent

US7257209B2Aug 14, 2007

Calling-party-pays call processing for cellular and paging

SBC PROPERTIES LP10 citations82

AT & T IP I LP

1 patent

US8036354B2Oct 11, 2011

Calling-party-pays call processing for cellular and paging

AT & T IP I LP1 citations61