Average Co-Inventor Count = 3.00
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. Faber-Castell Ag (3 from 45 patents)
2. A.w. Faber-Castell Unternehmensverwaltung Gmbh & Co. (1 from 10 patents)
4 patents:
1. 8349411 - Method for producing raised structures on the surface of a pencil
2. 7351469 - Method of producing surface coatings on articles, and article having a surface coating
3. 6837637 - Wood-encased pencil for writing, sketching, drawing, and cosmetic purposes
4. 6461067 - Wood-encased pencil for writing, sketching, drawing, and cosmetic purposes