Average Co-Inventor Count = 5.60
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 Printing Systems, Ltd. (2 from 129 patents)
2. Hitachi Koki Co., Ltd. (1 from 1,267 patents)
3 patents:
1. 7209256 - Document processing method
2. 7092117 - Print system
3. 6567180 - Document printing method