Average Co-Inventor Count = 3.73
ph-index = 17
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. (28 from 42,485 patents)
2. Hitachi Maxell, Limited (3 from 1,112 patents)
3. Other (1 from 832,680 patents)
4. Victor Company of Japan, Limited (1 from 2,887 patents)
5. Hitachi Ulsi Systems Co., Ltd. (1 from 336 patents)
6. Hitachi Video Engineering, Incorporated (1 from 66 patents)
7. Hitachi Information Network, Ltd. (1 from 5 patents)
8. Nii Data Communications Systems Corporation (1 from 1 patent)
31 patents:
1. 6534213 - Battery module for compact electric appliance for coping with deformation of the battery
2. 6285164 - Means for detecting the integrated value of current flow, a means for detecting the value of current flow and a battery pack employing those means
3. 6157170 - Means for detecting the integrated value of current flow, a means for
4. 5991798 - Package medium system having URL hyper-linked to data in removable
5. 5982719 - Disc auto changer for recording or reproducing information on a desired
6. 5909551 - Interactive recording/reproducing medium and reproducing system
7. 5875156 - Playback system for an optical disc representing a character or a
8. 5808987 - Information reproducing system for reproducing interleaved image data
9. 5751671 - Information recording media and optical disk, disk having specific data
10. 5737306 - Playback system for an optical disc presenting a character or a graphic
11. 5726702 - Television signal receiving apparatus incorporating an information
12. 5699106 - Interactive program selecting system
13. 5699360 - Method of and system for distributing digital audio image data
14. 5608717 - Information recording media and optical disc presenting a character or a
15. 5499221 - CD-ROM retrieval apparatus