Average Co-Inventor Count = 2.72
ph-index = 11
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. (29 from 42,485 patents)
2. Samsung Electronics Co., Ltd. (1 from 131,214 patents)
3. Hitachi Video and Information System, Inc. (1 from 46 patents)
30 patents:
1. 8314858 - Imaging and recording apparatus controlling erasure of data in flash type memory
2. 7346579 - Electronic purse application system and method thereof
3. 7304669 - Imaging and recording apparatus
4. 6677989 - Imaging and recording apparatus
5. 6345263 - Electronic purse application system and method thereof
6. 6282293 - System and method for charging fee for video information
7. 6205286 - Image pickup apparatus having image information compressing function
8. 6167467 - Information reception and recording circuit
9. 6081350 - Imaging and recording apparatus
10. 5938741 - Information transmission/reception system for transmitting information
11. 5903706 - Imager apparatus with rotatable camera head
12. 5808672 - Apparatus for removably mounting an electronic camera to a computer
13. 5801847 - Imaging and recording apparatus
14. 5793517 - Imaging and recording apparatus
15. 5790274 - Imaging and recording apparatus