Average Co-Inventor Count = 1.67
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. Dai Nippon Printing Co., Ltd. (2 from 3,205 patents)
2 patents:
1. 7298520 - Image printing system
2. 5940168 - Index-printed photograph DP bag, index-printed photograph film bag and