Average Co-Inventor Count = 5.27
ph-index = 1
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-high-technologies Corporation (2 from 2,874 patents)
2. Other (1 from 832,843 patents)
3 patents:
1. 9792832 - Charged particle beam apparatus, specimen observation system and operation program
2. 9058957 - Charged particle beam apparatus
3. 6657193 - Scanning electron microscope