Average Co-Inventor Count = 1.78
ph-index = 4
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 2,516 patents)
4 patents:
1. 6842933 - Substrate cleaning apparatus and cleaning member
2. 6651287 - Substrate cleaning apparatus and cleaning member
3. 6643882 - Substrate cleaning apparatus
4. 6560809 - Substrate cleaning apparatus