Average Co-Inventor Count = 4.20
ph-index = 1
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. J.s. Staedtler Gmbh & Co. Kg (1 from 34 patents)
2. Staedtler Mars Gmbh & Co. Kg (1 from 26 patents)
3. Staedtler Se (10 patents)
2 patents:
1. 11434388 - Refill for writing, drawing and/or painting devices and method for the production thereof
2. 8747003 - Writing, drawing, decorating or cosmetic pencil