Average Co-Inventor Count = 3.54
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. Hitachi, Ltd. (15 from 42,485 patents)
2. Jx Nippon Oil Energy Corporation (1 from 331 patents)
3. Kyorin Pharmaceutical Co., Ltd. (1 from 185 patents)
4. Hiatchi, Ltd. (1 from 17 patents)
5. Euglena Co., Ltd. (1 from 8 patents)
6. East Japan Railway Company (18 patents)
17 patents:
1. 9108645 - Driving system for railroad vehicle
2. 8951773 - Production method for biofuel
3. 8048928 - Therapeutic agent for treating liver disease containing 2-amino-1,3-propanediol derivative as active ingredient, and method for treating liver disease
4. 7643323 - Power converter
5. 7466103 - Battery module
6. 7317626 - Power converter
7. 6274998 - Controller for electric vehicles
8. 5408607 - Information transfer system
9. 4345670 - Elevator control system
10. 4081059 - Elevator control system
11. 4064971 - Elevator service information apparatus
12. 4044860 - Elevator traffic demand detector
13. 4043429 - Elevator car group control system
14. 4030572 - Elevator control apparatus
15. 4030571 - Elevator control system