Average Co-Inventor Count = 2.40
ph-index = 1
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. Silhouette Japan Corporation (2 from 5 patents)
2. Graphtec Kabushiki Kaisha (1 from 19 patents)
3 patents:
1. D1087219 - Cutting plotter
2. 11964842 - Pinch roller mechanism and plotter
3. 7715064 - Image reading apparatus