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. Tohoku Ricoh Co., Ltd. (2 from 234 patents)
2 patents:
1. 7123377 - System for managing number of sheets for image formation
2. 6819446 - Image forming system