Average Co-Inventor Count = 2.92
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. Hitachi, Ltd. (8 from 42,517 patents)
2. Samsung Electronics Co., Ltd. (1 from 131,906 patents)
9 patents:
1. 8270816 - Information recording and/or playback apparatus
2. 8224151 - Apparatus for recording and reproducing digital image and speech
3. 8009536 - Recording and reproducing apparatus
4. 7885515 - Recording/reproducing device and recording/reproduction method
5. 7193946 - Information recording apparatus and method
6. 7106954 - Digital camcorder
7. 6876612 - Information recording apparatus and method
8. 6445654 - Recording/reproducing method and device with supplementary data storage and output
9. 6226449 - Apparatus for recording and reproducing digital image and speech