Average Co-Inventor Count = 1.78
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. Ricoh Company, Ltd. (2 from 28,546 patents)
2 patents:
1. 6459863 - Method and system for information control capable of effectively performing an automatic payment for maintenance expenses
2. 5126799 - Image recording apparatus having a toner supply tank and a toner