Average Co-Inventor Count = 1.00
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. Dauphin Entwicklungs-u. Beteiligungs Gmbh (2 from 35 patents)
2. Friedrich W. Dauphin Gmbh & Co. Entwicklungs- Und Beteiligungs-kg (1 from 2 patents)
3 patents:
1. 6874853 - Chair
2. 6572191 - Chair, in particular office chair, having a synchronous mechanism
3. 5326155 - Back rest for a chair