Average Co-Inventor Count = 1.00
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 (26 patents)
1 patent:
1. 7758682 - Non-aqueous inks with an extended cap-off time