Average Co-Inventor Count = 3.00
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. Adtec Engineering Co., Ltd. (2 from 18 patents)
2 patents:
1. 6831730 - Optical magnification adjustment system and projection exposure device
2. 6738195 - Optical magnification adjustment system and projection exposure device