Average Co-Inventor Count = 4.00
ph-index = 1
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. Merck + Co., Inc. (2 from 4,770 patents)
2 patents:
1. 7312334 - Method of preparing inhibitors phosphodiesterase-4
2. 6909002 - Method of preparing inhibitors of phosphodiesterase-4