Average Co-Inventor Count = 2.65
ph-index = 8
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. Kabushiki Kaisha Topcon (22 from 1,033 patents)
2. Other (2 from 832,843 patents)
24 patents:
1. 7292713 - Eye test service system
2. 7274806 - Service system for selecting personal goods to wear or carry, and program product therefor
3. 7152976 - Apparatus for simulating processing of eyeglass lenses
4. 7088439 - Lens meter
5. 7010146 - Database constructing system
6. 6950180 - Lens meter
7. 6937328 - Method for measuring refractive power and apparatus therefor
8. 6778264 - Lens meter
9. 6705728 - Ophthalmologic apparatus
10. 6634754 - Eyeglass frame selecting system
11. 6428301 - Lens molding apparatus and lens molding tool
12. 6359684 - Lens specifying device
13. 6236453 - Lens meter
14. 6145989 - Lens meter
15. 6082859 - Ophthalmological photographing apparatus