P

Inventor

SMITH DAVID B

US135 patents
⚠️ This page may combine multiple inventors who share the name “SMITH DAVID B”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

LUCENT TECHNOLOGIES INC

17 patents
US5559871ASep 24, 1996

Call charge control and notification

LUCENT TECHNOLOGIES INC177 citations99
US6263055B1Jul 17, 2001

System for suppressed ringing access of subscriber lines to identify usage anomalies of customer premise equipment connected thereto

LUCENT TECHNOLOGIES INC267 citations98
US6724885B1Apr 20, 2004

Automatic call distribution center with queue position restoration for call-back customers

LUCENT TECHNOLOGIES INC110 citations97
US6452490B1Sep 17, 2002

Home/commercial security monitoring system

LUCENT TECHNOLOGIES INC244 citations97
US6167042ADec 26, 2000

Communications between service providers and customer premises equipment

LUCENT TECHNOLOGIES INC66 citations96
US5825849AOct 20, 1998

Loop-back test system using a suppressed ringing connection

LUCENT TECHNOLOGIES INC56 citations96
US5812656ASep 22, 1998

System for providing prioritized connections in a public switched network

LUCENT TECHNOLOGIES INC70 citations96
US5721765AFeb 24, 1998

Personal identification number security system incorporating a time dimension

LUCENT TECHNOLOGIES INC74 citations96
US6615194B1Sep 2, 2003

System for secure execution of credit based point of sale purchases

LUCENT TECHNOLOGIES INC68 citations95
US5999526ADec 7, 1999

Method and apparatus for delivering data from an information provider using the public switched network

LUCENT TECHNOLOGIES INC127 citations94
US6128376AOct 3, 2000

Change of equal access carrier notification

LUCENT TECHNOLOGIES INC26 citations93
US5742667AApr 21, 1998

Notification of toll free call charging status

LUCENT TECHNOLOGIES INC35 citations93
US5710807AJan 20, 1998

Method for recording non-communication intervals during a communications call

LUCENT TECHNOLOGIES INC25 citations93
US5606593AFeb 25, 1997

Apparatus and method for automatically returning a telephone set to an on-hook condition

LUCENT TECHNOLOGIES INC20 citations93
US6937594B2Aug 30, 2005

Loop back testing for multi-protocol hybrid networks

LUCENT TECHNOLOGIES INC26 citations92
US6801620B2Oct 5, 2004

Enhanced agent automatic call distribution control

LUCENT TECHNOLOGIES INC27 citations92
US6754311B1Jun 22, 2004

Enhanced subscriber line call monitoring

LUCENT TECHNOLOGIES INC31 citations92

PRECOR INC

8 patents

SYNTEX INC

4 patents

ETHICON ENDO SURGERY LLC

3 patents

ETHICON ENDO SURGERY INC

3 patents

HUANG ZHIFAN F

2 patents

(unassigned)

2 patents

ETHICON LLC

1 patent

HUITEMA THOMAS W

1 patent

AT & T CORP

1 patent

PHYSIO CONTROL CORP

1 patent

MARTIN MARIETTA ENERGY SYSTEMS

1 patent

BOEING CO

1 patent

SULLIVAN ROBERT J

1 patent

TARGET BRANDS INC

1 patent

CROWN EQUIP CORP

1 patent

LECTRON PRODUCTS

1 patent

SMITH DAVID B

1 patent

Showing the top 50 of 135 patents by PatentIndex Score.