Average Co-Inventor Count = 1.17
ph-index = 5
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 (8 from 58,132 patents)
8 patents:
1. D667785 - Battery charger
2. D449037 - Remote controller
3. D433410 - Audio visual data recorder
4. D420350 - Video tape recorder
5. D418823 - Combined recorder and player for storing data
6. D416891 - Video tape recorder
7. D410918 - Video tape recorder
8. D374231 - Tape player combined with a radio receiver