Average Co-Inventor Count = 3.00
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. Sanford Gmbh (2 from 386 patents)
2 patents:
1. 9004792 - Eraser cap assembly for writing instrument
2. 7290955 - Bold-fine multiple width marking instrument