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. Wilhelm Karmann Gmbh (2 from 183 patents)
2. Valmet Automotive Oy (7 patents)
2 patents:
1. 6578898 - Convertible vehicle
2. 6454342 - Convertible vehicle