Average Co-Inventor Count = 2.91
ph-index = 9
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 (15 from 58,131 patents)
15 patents:
1. 6424790 - Video tape recorder having control head upstream of erase head
2. 6341047 - AV data base for VTR
3. 5907365 - Television device
4. 5907446 - Video tape recorder for recording management data on video tape
5. 5900912 - Broadcasting signal receiver
6. 5825968 - Apparatus for controlling a record operation based on a copy inhibiting
7. 5812209 - Television device
8. 5745640 - AV data base for VTR
9. 5585820 - Apparatus for and method of generating characters
10. 5557422 - Recording method and apparatus for programming a recording schedule
11. 5519457 - Remote controller apparatus and an audio-video combination system using
12. 5438325 - Remote controller apparatus and an audio-video combination system using
13. 5379153 - Recording and reproducing apparatus having program information
14. 5361173 - Devices for controlling recording and/or reproducing apparatus utilizing
15. 5206738 - Magnetic recording apparatus having a means for determining recording