Growing community of inventors

Santa Barbara, CA, United States of America

Ivan Johannessen

Average Co-Inventor Count = 7.00

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 = 9

Ivan JohannessenDavid S Trandal (2 patents)Ivan JohannessenLeland W Kirchhoff (2 patents)Ivan JohannessenColin Denison Kelley (2 patents)Ivan JohannessenDonnie Tognazzini (2 patents)Ivan JohannessenScott Herriman (2 patents)Ivan JohannessenRussell Williams (2 patents)Ivan JohannessenIvan Johannessen (2 patents)David S TrandalDavid S Trandal (135 patents)Leland W KirchhoffLeland W Kirchhoff (59 patents)Colin Denison KelleyColin Denison Kelley (54 patents)Donnie TognazziniDonnie Tognazzini (8 patents)Scott HerrimanScott Herriman (8 patents)Russell WilliamsRussell Williams (2 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Callwave Communications, LLC (1 from 80 patents)

2. Callwave, Inc. (1 from 37 patents)


2 patents:

1. 8630396 - Methods and systems for transferring voice messages and faxes over a network

2. 7965825 - Methods and systems for transferring voice messages and faxes over a network

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as of
12/13/2025
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