Average Co-Inventor Count = 2.00
ph-index = 1
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. Hoya Corporation (3 from 2,529 patents)
3 patents:
1. 8535856 - Lithographic mask and manufacturing method thereof
2. 8263294 - Lithographic mask and manufacturing method thereof
3. 7585418 - Lithographic mask and manufacturing method thereof