Average Co-Inventor Count = 3.00
ph-index = 3
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. Mitsubishi Denki Kabushiki Kaisha (3 from 21,351 patents)
3 patents:
1. 6437909 - UV-absorbing filter and optical apparatus incorporating the same
2. 6364493 - Image displaying apparatus
3. 3999242 - Cleaning apparatus