Growing community of inventors

Forest, VA, United States of America

James F Collum

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 = 28

James F CollumWilliam Oscar Janky (2 patents)James F CollumEugene Harold Peterson, Iii (2 patents)James F CollumDennis Maddox (2 patents)James F CollumJames F Collum (2 patents)William Oscar JankyWilliam Oscar Janky (15 patents)Eugene Harold Peterson, IiiEugene Harold Peterson, Iii (7 patents)Dennis MaddoxDennis Maddox (2 patents)
..
Inventor’s number of patents
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Strength of working relationships

Company Filing History:

1. Pine Valley Investments, Inc. (1 from 63 patents)

2. M/a-Com Private Radio Systems, Inc. (1 from 9 patents)


2 patents:

1. 7697689 - Secure transmission system for a digital trunked radio system

2. 7203318 - Secure transmission system for a digital trunked radio system

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1/23/2026
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