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. Praxair Technology, Inc. (3 from 1,446 patents)
3 patents:
1. 5964925 - Sulfonated polyimide gas separation membranes
2. 5725633 - Sulfonated polyimide gas separation membranes
3. 5618334 - Sulfonated polyimide gas separation membranes