Average Co-Inventor Count = 3.00
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. Atr Auditory and Visual Perception Research Laboratories (1 from 14 patents)
1 patent:
1. 5459815 - Speech recognition method using time-frequency masking mechanism