Average Co-Inventor Count = 2.77
ph-index = 3
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. Kraftwerk Union Aktiengesellschaft (3 from 461 patents)
3 patents:
1. 4722001 - Self-propelled inspection vehicle
2. 4657450 - Machining tool for pipes
3. 4601133 - Manipulator head with grinding device for pipes or pipelines