Average Co-Inventor Count = 2.67
ph-index = 2
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.
Company Filing History:
1. Preussag Aktiengesellschaft (2 from 21 patents)
2. Grundfos International A/s (1 from 21 patents)
2 patents:
1. 5246070 - Piping for the completion of a groundwater monitoring site
2. 5224389 - Method and apparatus for taking samples from a groundwater monitoring