Average Co-Inventor Count = 3.43
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 (2 from 58,129 patents)
2 patents:
1. 9817889 - Speech-based pronunciation symbol searching device, method and program using correction distance
2. 8566094 - Information processing apparatus, information processing method, and program