Average Co-Inventor Count = 6.00
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. Nippon Telegraph and Telephone Corporation (2 from 5,290 patents)
2 patents:
1. 8126202 - Digital watermark padding method, digital watermark padding device, digital watermark detecting method, digital watermark detecting device, and program
2. 7970164 - Digital watermark padding method, digital watermark padding device, digital watermark detecting method, digital watermark detecting device, and program