Average Co-Inventor Count = 2.15
ph-index = 1
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. Droessler Gmbh Umwelttechnik (2 from 2 patents)
2. Db Netz Ag (1 from 3 patents)
3. Drossler Gmbh Umwelttechnik (0 patent)
3 patents:
1. 9869106 - Concrete construction of modular design
2. 8950149 - Concrete structure
3. 7793857 - Fixing means for fixing railway lines to sleepers or stretches of track