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. Amgen Inc. (2 from 1,970 patents)
2 patents:
1. D958329 - Handheld drug delivery device
2. D956211 - Handheld drug delivery device