Average Co-Inventor Count = 5.54
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 Hoso' Kyokai (2 from 372 patents)
2. Kabushiki Kaisha Toshiba (1 from 52,722 patents)
2 patents:
1. 5418819 - Transmitting apparatus and receiving apparatus based on phase modulation
2. 5327462 - Digital type VSB modulation apparatus