Average Co-Inventor Count = 4.00
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 (3 from 2,514 patents)
3 patents:
1. 6984164 - Polishing apparatus
2. 6764381 - Polishing apparatus
3. 6558229 - Polishing apparatus