Average Co-Inventor Count = 3.81
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. Ebara Corporation (4 from 2,508 patents)
4 patents:
1. 6660139 - Plating apparatus and method
2. 6500317 - Plating apparatus for detecting the conductivity between plating contacts on a substrate
3. 6365020 - Wafer plating jig
4. 4545740 - Automatic operating system for pump driven by internal combustion engine