Average Co-Inventor Count = 1.67
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. Kabushiki Kaisha Toshiba (5 from 52,711 patents)
2. Canon Kabushiki Kaisha (1 from 90,594 patents)
3. Canon Aptex Kabushiki Kaisha (1 from 17 patents)
4. Nisuka Corporation (1 from 1 patent)
6 patents:
1. D421043 - Electronic copying machine
2. D396878 - Sorter
3. D390256 - Electronic copying machine
4. D387739 - Arithmetic operation control machine for an electronic computer equipped
5. D379635 - Sorter for a copying machine
6. D374454 - Electronic copying machine