Average Co-Inventor Count = 3.43
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. Werma Signaltechnik Gmbh + Co. Kg (1 from 4 patents)
2. Werma Signaltechnik Gmbh & Co. (1 from 3 patents)
2 patents:
1. 7545284 - Signaling appliance, in particular a signaling column
2. 6572242 - Illuminator for a signal lamp