Average Co-Inventor Count = 4.29
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. Hitachi Chemical Company, Ltd. (4 from 1,641 patents)
4 patents:
1. 8092980 - Photosensitive element
2. 7687224 - Photosensitive film
3. 7645561 - Photosensitive film
4. 7645562 - Photosensitive film