Average Co-Inventor Count = 4.13
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 (2 from 461 patents)
2. Den Norske Stats Oljeselskap A.s. (1 from 146 patents)
3. Areva Np Gmbh (211 patents)
3 patents:
1. 4852391 - Pipeline vehicle
2. 4793779 - Rotating piston compressor having an axially adjustable rotary sleeve
3. 4607822 - Shutoff valve with a conical valve seat