Average Co-Inventor Count = 5.60
ph-index = 3
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 58,131 patents)
2. Nec Corporation (1 from 35,734 patents)
3 patents:
1. 7019780 - Stereoscopic zoom lens with shutter arranged between first and second lens groups
2. 5880815 - Image pickup apparatus capable of preventing overlap or lack of image
3. 4491886 - Tape loading apparatus