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. Engelhard Corporation (2 from 623 patents)
2 patents:
1. 6361593 - Lustrous interference pigments with black absorption color
2. 6290766 - Lustrous interference pigments with black absorption color