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. Siemens Sgp Verkehrstechnik Gmbh (1 from 4 patents)
2. Siemens Transportation Systems Gmbh & Co. Kg (1 from 4 patents)
2 patents:
1. 7597052 - Anticlimber for railroad vehicles
2. 6834909 - Door fastening