Average Co-Inventor Count = 2.57
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. Societe Anonyme Dite:alsthom (2 from 22 patents)
2. Alsthom (1 from 61 patents)
3 patents:
1. 4907645 - Device for ventilating rheostats and/or fluid radiators in a locomotive
2. 4850652 - Feed circuit for railway braking systems
3. 4840221 - Device for ventilating rheostats and/or fluid radiators in a locomotive