Average Co-Inventor Count = 3.43
ph-index = 3
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. Dyckerhoff & Widmann Aktiengesellschaft (3 from 104 patents)
2. Dyckerhoff & Widmann Aktiengessellschaft (1 from 1 patent)
4 patents:
1. 4909474 - Apparatus for locating operational surfaces on a track for
2. 4905359 - Apparatus for forming slide surfaces on track for electromagnetically
3. 4856173 - Method of the formation of slide surfaces on a track for
4. 4854028 - Method of locating operational surfaces of a track for