Growing community of inventors

Hiawatha, IA, United States of America

Mark O'Brien

Average Co-Inventor Count = 5.70

ph-index = 5

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 = 299

Mark O'BrienJoel Hanson (7 patents)Mark O'BrienTom Galvin (4 patents)Mark O'BrienMike Kirchner (4 patents)Mark O'BrienThomas Joseph Galvin (3 patents)Mark O'BrienMichael C Kirchner (3 patents)Mark O'BrienDonald J Maurer (3 patents)Mark O'BrienAnthony W S Moey (3 patents)Mark O'BrienTony Moey (3 patents)Mark O'BrienDon Fergus (3 patents)Mark O'BrienTony W S Moey (1 patent)Mark O'BrienMark O'Brien (7 patents)Joel HansonJoel Hanson (11 patents)Tom GalvinTom Galvin (4 patents)Mike KirchnerMike Kirchner (4 patents)Thomas Joseph GalvinThomas Joseph Galvin (7 patents)Michael C KirchnerMichael C Kirchner (6 patents)Donald J MaurerDonald J Maurer (5 patents)Anthony W S MoeyAnthony W S Moey (3 patents)Tony MoeyTony Moey (3 patents)Don FergusDon Fergus (3 patents)Tony W S MoeyTony W S Moey (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Verizon Business Global LLC (3 from 289 patents)

2. Worldcom, Inc. (2 from 132 patents)

3. Mci, Inc. (1 from 161 patents)

4. Mci Worldcom, Inc. (1 from 72 patents)


7 patents:

1. 8553857 - Systems and methods for receiving telephone calls via instant messaging

2. 7496091 - Virtual PBX system

3. 7274778 - Systems and methods for receiving telephone calls via instant messaging

4. 6775272 - Virtual PBX system

5. 6697474 - Systems and methods for receiving telephone calls via instant messaging

6. 6393017 - Virtual PBX system

7. 6351464 - Virtual second line hybrid network communication system

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idiyas.com
as of
1/4/2026
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