Growing community of inventors

Warrington, PA, United States of America

Jeffrey D Karn

Average Co-Inventor Count = 1.25

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 = 218

Jeffrey D KarnJohn W Houriet, Jr (1 patent)Jeffrey D KarnPeter Feuer (1 patent)Jeffrey D KarnKevin A Hassan (1 patent)Jeffrey D KarnJames R Stelzer (1 patent)Jeffrey D KarnJeffrey D Karn (4 patents)John W Houriet, JrJohn W Houriet, Jr (11 patents)Peter FeuerPeter Feuer (3 patents)Kevin A HassanKevin A Hassan (3 patents)James R StelzerJames R Stelzer (1 patent)
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Inventor’s number of patents
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Strength of working relationships

Company Filing History:

1. Ami Entertainment Network, LLC (2 from 29 patents)

2. Merit Industries, Inc. (1 from 11 patents)

3. Megatouch, LLC (1 from 3 patents)


4 patents:

1. 9120010 - Touchscreen game allowing simultaneous movement of multiple rows and/or columns

2. 8845421 - Game of chance on input of currency for amusement devices

3. 8641497 - System for tracking account activity on an amusement device

4. 6082887 - Game machine with automated tournament mode

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as of
12/30/2025
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