MK

Masahisa Kosaka

HO Hoya: 2 patents #10 of 112Top 9%
📍 Hatsukaichi, JP: #3 of 10 inventorsTop 30%
Overall (2004): #51,633 of 270,089Top 20%
2
Patents 2004

Issued Patents 2004

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
6743886 Plastic lenses for spectacles — 2004-06-01
6673888 Optical materials having good ultraviolet absorbability and method for producing them — 2004-01-06