Average Co-Inventor Count = 3.40
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. Fujitsu Ten Limited (4 from 902 patents)
4 patents:
1. 8421862 - Drive recorder
2. 8396623 - Driver recorder and method for setting up the driver recorder
3. 8285424 - Vehicle-running-state display method
4. 7598889 - Driving information analysis apparatus and driving information analysis system