Average Co-Inventor Count = 2.40
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 (4 from 58,132 patents)
4 patents:
1. 9396857 - Magnetic circuit and key input device
2. 9324514 - Key input device
3. 7614017 - Information processing apparatus, processing method therefor, program allowing computer to execute the method
4. 5978552 - Ruled line generating apparatus and sheet for use therein