Average Co-Inventor Count = 4.80
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. Instrument Technology Research Center (2 from 6 patents)
2 patents:
1. 8139934 - Close-up photograph device
2. 7535557 - Lens measuring method and device for determining decenter and tilt of the lens