Average Co-Inventor Count = 1.76
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. Tomy Company, Ltd. (3 from 576 patents)
2. Sony Corporation (2 from 58,129 patents)
5 patents:
1. 10459320 - Portable printer
2. D838761 - Camera
3. D599833 - Digital camera
4. 5406037 - Headphone including means for mounting belt-like suspender
5. 5018599 - Headphone device