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. Isp Investments Inc. (2 from 733 patents)
2 patents:
1. 5830964 - Vinyl pyrrolidone polymers substantially free of vinyl lactam monomers
2. 5635568 - Reactive extrusion process for making mixed salts of polymers containing