Average Co-Inventor Count = 4.05
ph-index = 1
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. Sony Corporation (5 from 58,131 patents)
5 patents:
1. 9685286 - Keyboard device
2. 9396857 - Magnetic circuit and key input device
3. 9324514 - Key input device
4. D753646 - Computer
5. 8506311 - Communication device