Average Co-Inventor Count = 3.27
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. Holland Usa, Inc. (3 from 52 patents)
3 patents:
1. D573189 - Clip for a writing instrument
2. D568938 - Writing instrument
3. D564027 - Writing instrument