Takatsugu Watanabe

HO Hoya: 2 patents #523 of 1,290Top 45%

HT Hoya Lens Thailand: 1 patents #59 of 94Top 65%

Overall (All Time): #1,341,975 of 4,157,543Top 35%

Patents All Time

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #	Title	Co-Inventors	Date
12379612	Spectacle lens, spectacle lens designing method, spectacle lens manufacturing method, and spectacle	—	2025-08-05
9146405	Manufacturing method of progressive-power lens	—	2015-09-29
7677726	Manufacturing method for spectacle lens and spectacle lens	—	2010-03-16