Average Co-Inventor Count = 2.00
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. Faber-castell Ag (1 from 45 patents)
2. A.w. Faber-castell Unternehmensverwaltung Gmbh & Co. (1 from 10 patents)
2 patents:
1. 9060587 - Pencil
2. 6149331 - Refillable soft lead pencil