Average Co-Inventor Count = 1.00
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. Ruhrgas Aktiengesellschaft (2 from 41 patents)
2 patents:
1. 5913326 - Automatic closing device for a shut-off device
2. 4749002 - Shut-off device in the form of a ball valve