Growing community of inventors

Houston, TX, United States of America

Colin Johnston

Average Co-Inventor Count = 2.00

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 = 2

Colin JohnstonHin Chiu (1 patent)Colin JohnstonPaul Shotton (1 patent)Colin JohnstonSteven Brock (1 patent)Colin JohnstonSteven Brock (0 patent)Colin JohnstonColin Johnston (3 patents)Hin ChiuHin Chiu (5 patents)Paul ShottonPaul Shotton (2 patents)Steven BrockSteven Brock (1 patent)Steven BrockSteven Brock (0 patent)
..
Inventor’s number of patents
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Strength of working relationships

Company Filing History:

1. Helix Energy Solutions Group, Inc. (2 from 6 patents)

2. Helix Energy Group Solutions, Inc. (1 from 1 patent)


3 patents:

1. 10633937 - Lift frame system and method of use

2. 9731796 - Well intervention semisubmersible vessel

3. 9273536 - Subsea intervention system

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as of
12/17/2025
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