Issued Patents 2021
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11194078 | Antireflection film having silver-containing layer and fluorocarbon layer, method for producing antireflection film, optical element, and optical system | Kenichi Umeda, Yuichiro Itai, Shinichiro Sonoda | 2021-12-07 |
| 11029449 | Antireflection film, optical element, optical system, method of producing antireflection film | Kenichi Umeda, Yuichiro Itai, Hideki YASUDA | 2021-06-08 |
| 10927446 | Method for producing transparent optical film and method for producing transparent multilayer film | Kenichi Umeda, Yuichiro Itai, Shinichiro Sonoda | 2021-02-23 |