Average Co-Inventor Count = 2.00
ph-index = 2
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. 12062233 - Information processing apparatus and information processing method
2. 7839627 - Portable electronic apparatus
3. 6504911 - Telephone device
4. 5418841 - Telephone answering machine with non-volatile memory