Average Co-Inventor Count = 2.00
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. Sony Corporation (5 from 58,132 patents)
5 patents:
1. D435840 - Combined radio receiver, disc player and clock
2. D395570 - Case for magnet optical disc
3. D394254 - Video cassette
4. D391562 - Video cassette
5. D377791 - Video cassette