Average Co-Inventor Count = 4.00
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. Tosoh Corporation (2 from 893 patents)
2 patents:
1. 5204077 - Pollucite crystalline powders with low thermal expansion coefficients
2. 5032556 - Preparation method for zircon powder