Average Co-Inventor Count = 2.67
ph-index = 4
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. Tokyo Shibaura Denki Kabushiki Kaisha (3 from 2,916 patents)
2. Kabushiki Kaisha Toshiba (1 from 52,752 patents)
4 patents:
1. 4856768 - Separating device for a sheet collection apparatus
2. 4501418 - Stacking device for paper sheets
3. 4470590 - Stacking device for paper sheets
4. 4339119 - Paper sheets separating apparatus