Average Co-Inventor Count = 3.44
ph-index = 4
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. 7202975 - Printer having image correcting capability
2. 7199904 - Printer having image correcting capability
3. 7196818 - Printer having image correcting capability
4. 7193749 - Printer having image correcting capability
5. 6831755 - Printer having image correcting capability
6. 4877946 - Card issuance apparatus with cancellation mode
7. 4812632 - Portable magnetic card reading and writing apparatus with verification