Average Co-Inventor Count = 2.25
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. Carl Zeiss Vision Gmbh (3 from 70 patents)
2. Carl Zeiss Vision International Gmbh (226 patents)
3 patents:
1. 8079707 - Eyeglass prescription method
2. 8007103 - System and method for prescription of visual aids
3. 7744217 - Apparatus and method for determining an eyeglass prescription for a vision defect of an eye