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. Unifrax Corporation (2 from 20 patents)
2. The Carborundum Company (1 from 164 patents)
3. Darchem Engineering Ltd. (1 from 1 patent)
3 patents:
1. 5989736 - Carbon fiber and ceramic fiber paper composites and uses therefor
2. 5834120 - Fire protection material
3. 5273821 - High strength ceramic fiber board