Growing community of inventors

Atlanta, GA, United States of America

David D Kaufman

Average Co-Inventor Count = 7.50

ph-index = 2

The patent ph-index is calculated by counting the number of publications for which an author has been cited by other authors at least that same number of times.

Forward Citations = 338

David D KaufmanAlbert Friedes (1 patent)David D KaufmanYong Zhou (1 patent)David D KaufmanPamela J Lauber (1 patent)David D KaufmanNga V Chau (1 patent)David D KaufmanBarbara J Kittredge (1 patent)David D KaufmanReuben D Hauptman (1 patent)David D KaufmanJames R Magura (1 patent)David D KaufmanThomas P Howe (1 patent)David D KaufmanPamela A Steinert (1 patent)David D KaufmanMohan Venkataramana (1 patent)David D KaufmanRachelle E Rees (1 patent)David D KaufmanElizabeth V Courte (1 patent)David D KaufmanPatricia Lindblad (1 patent)David D KaufmanIrving Benyacar (1 patent)David D KaufmanDavid D Kaufman (2 patents)Albert FriedesAlbert Friedes (14 patents)Yong ZhouYong Zhou (10 patents)Pamela J LauberPamela J Lauber (6 patents)Nga V ChauNga V Chau (4 patents)Barbara J KittredgeBarbara J Kittredge (3 patents)Reuben D HauptmanReuben D Hauptman (2 patents)James R MaguraJames R Magura (1 patent)Thomas P HoweThomas P Howe (1 patent)Pamela A SteinertPamela A Steinert (1 patent)Mohan VenkataramanaMohan Venkataramana (1 patent)Rachelle E ReesRachelle E Rees (1 patent)Elizabeth V CourteElizabeth V Courte (1 patent)Patricia LindbladPatricia Lindblad (1 patent)Irving BenyacarIrving Benyacar (1 patent)
..
Inventor’s number of patents
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Strength of working relationships

Company Filing History:

1. At&t Bell Laboratories (2 from 3,345 patents)


2 patents:

1. 5187710 - Method and apparatus for the billing of value-added communications calls

2. 5003584 - Method and apparatus for the billing of value-added communication calls

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as of
12/17/2025
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