Growing community of inventors

Sterling, VA, United States of America

Alan R Trefzger

Average Co-Inventor Count = 1.33

ph-index = 4

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 = 194

Alan R TrefzgerJacob W Jorgensen (1 patent)Alan R TrefzgerJames J Frimmel, Jr (1 patent)Alan R TrefzgerAlan R Trefzger (4 patents)Jacob W JorgensenJacob W Jorgensen (4 patents)James J Frimmel, JrJames J Frimmel, Jr (4 patents)
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Inventor’s number of patents
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Strength of working relationships

Company Filing History:

1. International Telesystems Corporation (2 from 16 patents)

2. Eis International, Inc. (2 from 7 patents)


4 patents:

1. 5757644 - Voice interactive call center training method using actual screens and

2. 5544220 - System for integrating a stand alone inbound automatic call distributor

3. 5425093 - System for integrating a stand alone inbound automatic call distributor

4. 4741028 - Method of randomizing telephone numbers

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as of
12/20/2025
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