Average Co-Inventor Count = 5.00
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. Nitta Corporation (2 from 144 patents)
2 patents:
1. 6666752 - Wafer retainer and method for attaching/detaching the wafer retainer to/from polishing machine base plate
2. 6616520 - Polishing cloth and method for attaching/detaching the polishing cloth to/from polishing machine base plate