Average Co-Inventor Count = 4.61
ph-index = 4
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. (4 from 42,517 patents)
4 patents:
1. 7249039 - Processing system for providing services and processing method therefor
2. 6823258 - Method and apparatus for gathering vehicle information
3. 6711495 - Method and apparatus for gathering vehicle information
4. 6662090 - Protective maintenance service system for vehicles