Average Co-Inventor Count = 5.00
ph-index = 6
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. (6 from 42,508 patents)
6 patents:
1. 6523024 - Methods for retrieving database with image information
2. 6144956 - Methods for retrieving text information in a database through image
3. 6032157 - Retrieval method using image information
4. 5930799 - Database creating method using image information
5. 5857199 - Retrieval method using image information
6. 5729731 - Method of retrieving in a database through image information