Average Co-Inventor Count = 3.44
ph-index = 3
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. (7 from 42,508 patents)
2. Other (1 from 832,880 patents)
3. Hitachi-High-Technologies Corporation (1 from 2,874 patents)
9 patents:
1. 8693346 - On-vehicle gateway device, method for controlling an on-vehicle gateway device, connection device and connection control method
2. 8375074 - Device and program for ciphering data
3. 8139493 - On-vehicle gateway device, method for controlling an on-vehicle gateway device, connection device and connection control method
4. 7813852 - System mounted on a vehicle, vehicle, diagnosis information collecting device and navigation device
5. 7680486 - Sensor network system
6. 7540019 - Processing device capable of implementing flexible access control
7. 7331059 - Access restriction control device and method
8. 7310812 - Service executing method and service providing system
9. 7072766 - Guidance information providing system