Average Co-Inventor Count = 7.50
ph-index = 14
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. (35 from 42,488 patents)
2. Hitachi Ulsi Systems Co., Ltd. (3 from 336 patents)
3. Other (2 from 832,718 patents)
4. Hitachi High-tech Corporation (2 from 1,119 patents)
5. Renesas Technology Corp. (1 from 3,781 patents)
6. Hitachi Electronics Engineering Co., Ltd. (1 from 88 patents)
7. Hitachi High-tech Electronics Engineering Co., Ltd. (1 from 14 patents)
42 patents:
1. 11855318 - Fuel battery cell, fuel battery system, leak detection method
2. 11417892 - Fuel cell
3. 7957579 - Pattern inspection method and apparatus
4. 7952074 - Method and apparatus for inspecting integrated circuit pattern
5. 7894658 - Pattern inspection method and apparatus
6. 7457453 - Pattern inspection method and apparatus
7. 7417444 - Method and apparatus for inspecting integrated circuit pattern
8. 7301146 - Probe driving method, and probe apparatus
9. 7266235 - Pattern inspection method and apparatus
10. 7260256 - Method and system for inspecting a pattern
11. 7133550 - Pattern inspection method and apparatus
12. 7122796 - Electron beam inspection method and apparatus and semiconductor manufacturing method and its manufacturing line utilizing the same
13. 7026830 - Method and apparatus for inspecting integrated circuit pattern
14. 6970004 - Apparatus for inspecting defects of devices and method of inspecting defects
15. 6960765 - Probe driving method, and probe apparatus