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. University System of Maryland (3 from 1,932 patents)
3 patents:
1. 5707848 - Calcium free subtilisin mutants
2. 5567601 - Subtilisin mutants lacking a primary calcium binding site
3. 5470733 - Calcium free subtilisin mutants