Average Co-Inventor Count = 4.76
ph-index = 13
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. (24 from 42,485 patents)
2. Hitachi Consumer Electronics Co., Ltd. (11 from 365 patents)
3. Hitachi Maxell, Limited (4 from 1,112 patents)
4. Other (3 from 832,680 patents)
5. Ntt Advanced Technology Corporation (2 from 41 patents)
6. Denon, Ltd. (2 from 20 patents)
7. Nakayo Telecommunications, Inc. (2 from 10 patents)
8. Hitachi Maxwell, Ltd. (1 from 56 patents)
9. Kyushu Hitachi Maxell, Ltd. (1 from 37 patents)
10. Htachi, Ltd. (1 from 3 patents)
11. Hitachi Advanced Digital, Inc. (1 from 2 patents)
12. Hitachi, Ltd., and Hitachi Video and Information Systems, Inc. (1 from 1 patent)
51 patents:
1. D809409 - Breath alcohol content analyzer
2. 9846354 - Projection video display device with raisable/lowerable mirror
3. D744576 - Projector
4. D734383 - Projector
5. D722636 - Projector
6. D718802 - Projector
7. D718360 - Video camera
8. D698382 - Switching device for projector
9. D692473 - Camera for projector
10. D691648 - Projector
11. D686182 - Audio equipment for audio teleconferences
12. D683782 - Projector
13. D680150 - Projector
14. D678382 - Projector
15. D663723 - Microphone for audio teleconferences