Average Co-Inventor Count = 1.33
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. Nikon Corporation (2 from 8,893 patents)
2 patents:
1. 8724076 - Projection exposure apparatus, cleaning and maintenance methods of a projection exposure apparatus, and device manufacturing method
2. 8035797 - Projection exposure apparatus, cleaning and maintenance methods of a projection exposure apparatus, and device manufacturing method