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David Kaufman
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Atlanta, GA, US
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Patents Grants
last 30 patents
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Patent Grant
Employing an alternate identifier for subscription access to mobile...
Patent number
10,516,972
Issue date
Dec 24, 2019
AT&T Intellectual Property I, L.P.
David Kaufman
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Mobile device roaming status subscription
Patent number
10,475,020
Issue date
Nov 12, 2019
AT&T Mobility II LLC
David Kaufman
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Access to mobile location related information
Patent number
10,206,056
Issue date
Feb 12, 2019
AT&T Mobility II LLC
David Kaufman
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Access to mobile location related information
Patent number
9,351,111
Issue date
May 24, 2016
AT&T Mobility II LLC
David Kaufman
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Method and apparatus for the billing of value-added communications...
Patent number
5,187,710
Issue date
Feb 16, 1993
AT&T Bell Laboratories
Nga V. Chau
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Method and apparatus for the billing of value-added communication c...
Patent number
5,003,584
Issue date
Mar 26, 1991
AT&T Bell Laboratories
Irving Benyacar
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Patents Applications
last 30 patents
Information
Patent Application
EMPLOYING AN ALTERNATE IDENTIFIER FOR SUBSCRIPTION ACCESS TO MOBILE...
Publication number
20190373414
Publication date
Dec 5, 2019
AT&T INTELLECTUAL PROPERTY I, L.P.
David Kaufman
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Baggage Management for Mobility-As-A-Service
Publication number
20180350024
Publication date
Dec 6, 2018
AT&T INTELLECTUAL PROPERTY I, L.P.
David Kaufman
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Application
MOBILE DEVICE ROAMING STATUS SUBSCRIPTION
Publication number
20160321642
Publication date
Nov 3, 2016
AT&T INTELLECTUAL PROPERTY I, L.P.
David Kaufman
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Application
ACCESS TO MOBILE LOCATION RELATED INFORMATION
Publication number
20160261981
Publication date
Sep 8, 2016
AT&T Mobility II LLC
David Kaufman
H04 - ELECTRIC COMMUNICATION TECHNIQUE