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. International Business Machines Corporation (2 from 164,197 patents)
2 patents:
1. 4390610 - Layered electrophotographic imaging element, apparatus and method
2. 4307167 - Layered electrophotographic plate having tetramethyl benzidene based