Average Co-Inventor Count = 5.00
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. Ricoh Company, Ltd. (2 from 28,544 patents)
2 patents:
1. 5370954 - Photoconductive composition containing trisazo and disazo compounds
2. 5105222 - Electrophotographic copying apparatus having photoconductor with