Average Co-Inventor Count = 5.79
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. Pfizer Corporation (1 from 4,455 patents)
2. Amersham Health As (1 from 46 patents)
3. Amersham Plc (1 from 18 patents)
3 patents:
1. 7507732 - Cyclopentapyridine and tetrahydroquinoline derivatives
2. 6749554 - Medical tools and devices with improved ultrasound visibility
3. 6662040 - Methods of photoacoustic imaging