Average Co-Inventor Count = 1.24
ph-index = 5
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 (7 from 58,130 patents)
7 patents:
1. RE45767 - Information processing system, hand held cellular phone, and information processing method
2. RE43680 - Information processing system, hand held cellular phone, and information processing method
3. 7458514 - Information processing system, hand held cellular phone, and information processing method
4. 7337957 - Authentication system authentication method authentication medium manufacturing device and authentication terminal device
5. 7299988 - Information processing system, hand held cellular phone, and information processing method
6. 5832088 - Method and apparatus for preventing data copying from a disk using data
7. 4015090 - Recording and/or reproducing apparatus