Growing community of inventors

Lewisville, TX, United States of America

Stephen M Callahan

Average Co-Inventor Count = 4.00

ph-index = 1

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 = 29

Stephen M Callahan ↔ William D Kreager, Jr (1 patent)Stephen M Callahan ↔ Kenneth R Berger (1 patent)Stephen M Callahan ↔ Stephen R Holten (1 patent)Stephen M CallahanStephen M Callahan (1 patent)William D Kreager, JrWilliam D Kreager, Jr (9 patents)Kenneth R BergerKenneth R Berger (3 patents)Stephen R HoltenStephen R Holten (1 patent)
..
Inventor’s number of patents
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Strength of working relationships

Company Filing History:

1. Frito-lay, Inc. (1 from 119 patents)


1 patent:

1. 4726171 - Method and apparatus for applying article to inside of bag

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as of
12/16/2025
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