Average Co-Inventor Count = 2.20
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 (3 from 58,130 patents)
3 patents:
1. 6622158 - Character information copying system, recording apparatus, and recording method
2. 6313812 - Single remote control system for plurality of audio and visual equipment
3. 5892519 - Information display device for displaying variation of environment