Average Co-Inventor Count = 2.76
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. (3 from 42,485 patents)
2. Hitachi-high-technologies Corporation (1 from 2,874 patents)
4 patents:
1. 8735469 - Resin material and high voltage equipment using the resin material
2. 7435949 - Mass spectrometric analysis method and system using the method
3. 7180056 - Mass spectrometry and mass spectrometry system
4. 6806098 - Method and device for assessing surface uniformity of semiconductor device treated by CMP