Growing community of inventors

Kristiansand, Norway

Christian B Von Der Ohe

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 = 0

Christian B Von Der Ohe ↔ David Bengt Johan Ankargren (1 patent)Christian B Von Der OheChristian B Von Der Ohe (1 patent)David Bengt Johan AnkargrenDavid Bengt Johan Ankargren (3 patents)
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Inventor’s number of patents
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Strength of working relationships

Company Filing History:

1. National Oilwell Varco Norway As (1 from 50 patents)

2. National Oilwell Norway As (25 patents)


1 patent:

1. 9051784 - Riser tensioner

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12/18/2025
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