Average Co-Inventor Count = 4.21
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. (4 from 42,508 patents)
2. Hitachi Engineering Services Co., Ltd. (1 from 30 patents)
3. Matrix Gmbh (1 from 14 patents)
4 patents:
1. 8248204 - Tag detecting system, moving object detecting method, and entrance/exit management system
2. 7848963 - Automatic auction method and system on server-client system
3. 7610217 - Automatic auction method and system on server-client system
4. 6044363 - Automatic auction method