Average Co-Inventor Count = 2.00
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. Oki Electric Industry Co., Ltd. (2 from 4,979 patents)
2 patents:
1. 5278752 - Proceeds processing apparatus requesting a customer to confirm proceeds
2. 5267315 - Secret identification number checking system