Average Co-Inventor Count = 4.29
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. Nippon Telegraph and Telephone Corporation (3 from 5,289 patents)
3 patents:
1. 12205610 - Speech imaging apparatus, speech imaging method and program
2. 11921852 - Instruction output apparatus, instruction output method and program
3. 11806213 - Voice transmission compensation apparatus, voice transmission compensation method and program