Average Co-Inventor Count = 1.88
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 28,566 patents)
2 patents:
1. 8743431 - Sheet conveying device, image reading device, and image forming device
2. 7454148 - Image forming apparatus