Average Co-Inventor Count = 3.93
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. Riso Kagaku Corporation (4 from 1,074 patents)
2. Nippon Seimitsu Kogyo Kabushiki Kaisha (2 from 25 patents)
3. Nisca Corporation (1 from 489 patents)
4 patents:
1. 5918871 - Sheet sorter with stapler
2. 5806850 - Sheet sorter
3. 5010420 - Image processing apparatus
4. 4956664 - Image processing apparatus having an overhead projector