Average Co-Inventor Count = 3.69
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 (3 from 90,673 patents)
2. Kowa Company Limited (1 from 591 patents)
4 patents:
1. D481409 - Single-lens reflex camera
2. D480743 - Single-lens reflex camera
3. D480744 - Single-lens reflex camera
4. D288822 - Fundus camera