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. Jcb Co., Ltd. (1 from 6 patents)
2. Sagawa Express Co., Ltd. (1 from 4 patents)
1 patent:
1. 7086590 - Pay-by-card method and pay-by-card system for home delivery service