Average Co-Inventor Count = 4.00
ph-index = 1
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. Ngk Insulators, Inc. (2 from 4,918 patents)
2. Kureha Kagaku Kogyo Kabushiki Kaisha (2 from 776 patents)
2 patents:
1. 4294795 - Stabilized electrocast zirconia refractories
2. 4288251 - Reinforced electrocast zirconia refractories