Average Co-Inventor Count = 4.00
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. 4992647 - Ticket processing terminal device which accepts previously issued
2. 4937464 - Modular jack with loop testing switch