Average Co-Inventor Count = 3.16
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. Canon Kabushiki Kaisha (5 from 90,673 patents)
2. Canon Denshi Kabushiki Kaisha (3 from 316 patents)
5 patents:
1. 4626082 - Projecting device
2. 4019025 - Card conveyor device
3. 3995256 - Selective switching circuit
4. 3946204 - Card reader protecting device
5. 3946202 - Information writing device