Average Co-Inventor Count = 1.29
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. Pan American Diamond Corporation (3 from 4 patents)
3 patents:
1. 5365754 - Magnifying gem holder
2. 5361606 - Magnifying gem holder
3. D339763 - Gem setting