Average Co-Inventor Count = 2.40
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. International Business Machines Corporation (4 from 164,244 patents)
4 patents:
1. 5808806 - Optical element having regions of different refractive indices for
2. 5643435 - Method of fabricating semiconductor device
3. 5611898 - Reaction chamber having in situ oxygen generation
4. 5585968 - Optical elements having regions of different indices of refraction and