Growing community of inventors

Plano, TX, United States of America

David C Cheng

Average Co-Inventor Count = 4.00

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 = 92

David C ChengEllis K Cave (2 patents)David C ChengDaren K Wilson (2 patents)David C ChengEric K Weeren (2 patents)David C ChengDavid C Cheng (2 patents)Ellis K CaveEllis K Cave (38 patents)Daren K WilsonDaren K Wilson (3 patents)Eric K WeerenEric K Weeren (3 patents)
..
Inventor’s number of patents
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Strength of working relationships

Company Filing History:

1. Intervoice Limited Partnership (2 from 91 patents)


2 patents:

1. 5822401 - Statistical diagnosis in interactive voice response telephone system

2. 5740233 - System and method for statistical diagnosis of the operation of an

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12/11/2025
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