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Heerenveen, Netherlands

Lodewijk Keizer

Average Co-Inventor Count = 6.00

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 = 8

Lodewijk Keizer ↔ Kok Seng Foo (1 patent)Lodewijk Keizer ↔ Chin Kau Quah (1 patent)Lodewijk Keizer ↔ Okky Ahmad Purwana (1 patent)Lodewijk Keizer ↔ Mark Jason Cassidy (1 patent)Lodewijk Keizer ↔ Mark Felton Randolph (1 patent)Lodewijk KeizerLodewijk Keizer (1 patent)Kok Seng FooKok Seng Foo (39 patents)Chin Kau QuahChin Kau Quah (10 patents)Okky Ahmad PurwanaOkky Ahmad Purwana (5 patents)Mark Jason CassidyMark Jason Cassidy (2 patents)Mark Felton RandolphMark Felton Randolph (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. A.p. Van Den Berg Holding B.v. (1 from 3 patents)

2. Keppel Offshore & Marie Technology Centre Pte Ltd (1 from 1 patent)


1 patent:

1. 8146418 - Apparatus and method for soil testing for jack-up rigs

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12/15/2025
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