Average Co-Inventor Count = 3.33
ph-index = 2
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. (5 from 42,485 patents)
2. Kao Corporation (1 from 3,600 patents)
3. Hitachi-high-technologies Corporation (1 from 2,874 patents)
7 patents:
1. 11721092 - Event analysis system and event analysis method
2. 11270562 - Video surveillance system and video surveillance method
3. 11086924 - Image search device and image search method
4. 10977515 - Image retrieving apparatus, image retrieving method, and setting screen used therefor
5. 10872114 - Image processing device, image retrieval interface display device, and method for displaying image retrieval interface
6. 9287082 - Charged particle beam apparatus
7. 7060108 - Hair dyeing process