Average Co-Inventor Count = 3.13
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 (6 from 58,129 patents)
6 patents:
1. 9167335 - Headphone
2. 8565468 - Headphone
3. 8408754 - Variable illumination apparatus
4. 8238033 - Liquid lens device and manufacturing method therefor
5. 8159754 - Optical device, electronic apparatus, and method of manufacturing optical device
6. 5521462 - Electron gun for CRT