Average Co-Inventor Count = 1.80
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. Hoya Corporation (6 from 2,528 patents)
6 patents:
1. 8785339 - Optical glass
2. 8647996 - Optical glass, preform for precision press molding, optical element, methods for manufacturing the same, and image pickup device
3. 8575047 - Optical glass, preform for precision press molding, and optical element
4. 8476178 - Optical glass
5. 8431504 - Optical glass, precision press-molding preform, optical element and their production processes as well as image-sensing device
6. 8288299 - Optical glass, preform for precision press molding, and optical element