Average Co-Inventor Count = 3.27
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. Sony Corporation (3 from 58,130 patents)
3 patents:
1. 7375919 - Recording and reproducing apparatus
2. 7113368 - Recording and reproducing apparatus for preventing erroneous erasure
3. 6208381 - Convertible connector arrangement adaptable for video camera