Average Co-Inventor Count = 3.64
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. Schott Glaswerke (3 from 241 patents)
3 patents:
1. 4686196 - Phototropic glass with a refractive index greater than or equal to 1.59,
2. 4486541 - Phototropic glass with a refractive index of at least 1.59
3. 4485178 - Phototropic glass with a brown tint in the irradiated state