Average Co-Inventor Count = 1.89
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 (5 from 58,132 patents)
5 patents:
1. 7876915 - Audio apparatus having tuner unit and digital reproducing unit
2. 6147950 - Recording and reproducing apparatus and recording and reproducing method
3. 6018504 - Recording device capable of recording broadcast signals at a desired time
4. 5751678 - Dubbing system
5. 5513385 - Reception apparatus, signal reproducing apparatus using reception