Average Co-Inventor Count = 4.72
ph-index = 11
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. (14 from 42,508 patents)
2. Other (3 from 832,891 patents)
3. Sumitomo Heavy Industries, Ltd. (1 from 1,180 patents)
17 patents:
1. 9487747 - Cell culture device
2. 8347282 - Embedded controllers and development tool for embedded controllers
3. 7444985 - Apparatus and method for controlling ignition timing of internal combustion engine
4. 7290529 - Spark advance controller and production machine of spark advance control logic in internal combustion engine
5. 7105964 - Electric rotating machine
6. 6995480 - Power supply equipment for motor vehicle with inverter for controlling motor generator
7. 6861767 - Power supply equipment for motor vehicle with battery and capacitor
8. 6833646 - Hybrid car and dynamo-electric machine
9. 6808468 - Composite power transmission mechanism and vehicle
10. 6577022 - Hybrid car and dynamo-electric machine
11. 6557656 - Driving system and vehicle
12. 6507127 - Hybrid vehicle
13. 6470983 - Hybrid vehicle
14. 6462430 - Hybrid car and dynamo-electric machine
15. 6360625 - Power transmission apparatus and vehicle using power transmission apparatus