Average Co-Inventor Count = 2.00
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. Quad/graphics, Inc. (2 from 64 patents)
2 patents:
1. 5713284 - Anti-ghosting roller
2. 5632203 - Anti-ghosting roller