Average Co-Inventor Count = 2.40
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 (1 from 58,130 patents)
2. Sony Kabushiki Kaisha (1 from 27 patents)
2 patents:
1. D431582 - Video camera combined with video tape recorder
2. D429267 - Video camera combined with video tape recorder