Average Co-Inventor Count = 1.87
ph-index = 6
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 58,130 patents)
2. Sony Computer Entertainment Inc. (1 from 1,799 patents)
7 patents:
1. D563995 - Recording medium
2. D563430 - Recording medium
3. D521978 - Speaker
4. D486469 - Combined digital camera and recorder/player for recording media
5. D477820 - Headphone
6. D471534 - Speaker box
7. D471179 - Speaker box