Average Co-Inventor Count = 2.40
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. Pfizer Corporation (1 from 4,455 patents)
2. Pharmacia & Upjohn Company (1 from 523 patents)
3. Pharmacia & Upjohn (1 from 117 patents)
3 patents:
1. 6841557 - Compounds for the treatment of addictive disorders
2. 6716854 - Treatments for restless legs syndrome
3. 6602868 - Treatments for restless legs syndrome