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. Canon Kabushiki Kaisha (2 from 90,809 patents)
2 patents:
1. 5157878 - Polishing method with error correction
2. 4993190 - Polishing apparatus