Average Co-Inventor Count = 3.00
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. Vae Gmbh (2 from 20 patents)
2. Bwg Gmbh & Co. Kg (2 from 8 patents)
3. Bwg Butzbacher Weichenbau Gmbh (1 from 19 patents)
4. Voestalpine Bwg Gmbh & Co. Kg (4 patents)
3 patents:
1. 7309050 - Grooved rail core piece
2. 7137601 - Check rail device
3. 5451018 - Railway tongue and rail juncture