Average Co-Inventor Count = 3.08
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 (3 from 90,673 patents)
2. Kowa Company Limited (3 from 591 patents)
6 patents:
1. D594493 - Telescope
2. D594494 - Telescope
3. D561735 - Digital audio player
4. D481409 - Single-lens reflex camera
5. D480743 - Single-lens reflex camera
6. D480744 - Single-lens reflex camera