Average Co-Inventor Count = 3.00
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. Alsthom (2 from 61 patents)
2. Regie Autonome Des Transports Parisiens (1 from 13 patents)
3. Institut National De Recherche Sur Les Transports Et Leur Securite (1 from 5 patents)
4. Instit National De Recherche Sur Les Transports Et Leur Securite (1 from 1 patent)
2 patents:
1. 4982671 - Vehicle with steerable axles
2. 4912406 - Device for determining position of a railway vehicle by measuring