Average Co-Inventor Count = 3.38
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. (1 from 28,546 patents)
2. Tohoku Ricoh Co., Ltd. (1 from 234 patents)
2 patents:
1. 7995236 - Printer having plural sheet feeding apparatuses with variable print speeds
2. 4919045 - Offset printer having a press drum larger than its rubber drum