Average Co-Inventor Count = 2.00
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. Deutsche Babcock Werke Aktiengesellschaft (2 from 34 patents)
2 patents:
1. 4548386 - Gate valve
2. 4546281 - Motor and gearing to drive a valve