Average Co-Inventor Count = 3.50
ph-index = 3
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. Canon Kabushiki Kaisha (4 from 90,631 patents)
4 patents:
1. 4733274 - Copying apparatus
2. 4494861 - Copying apparatus
3. 4275958 - Copying apparatus
4. 4165165 - Color image formation apparatus