Average Co-Inventor Count = 2.40
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. Riso Kagaku Corporation (2 from 1,074 patents)
2 patents:
1. 6663701 - Emulsion ink for stencil printing and its use
2. 5647274 - Pressure printing apparatus