Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12319783 | Cycloolefin polymer, method for producing same, and optical element | — | 2025-06-03 |
| 12235482 | Optical film, retarder film, and method for manufacturing same | Kazuki KUMAZAWA | 2025-02-25 |
| 12139570 | Retardation film and production method for retardation film | Takeshi Asada, Kensaku Fujii, Yusuke YASU, Hiroya Nishioka | 2024-11-12 |
| 11970562 | Retardation film and production method for retardation film | Takeshi Asada, Kensaku Fujii, Yusuke YASU, Hiroya Nishioka | 2024-04-30 |
| 11867873 | Method for producing multilayer optical film | — | 2024-01-09 |
| 11654601 | Resin sheet and method of producing resin sheet | Taichi SAWAGUCHI | 2023-05-23 |
| 11130848 | Laminated optical film and touch panel | — | 2021-09-28 |
| 10338291 | Multilayer film, polarization plate, and multilayer film production method | — | 2019-07-02 |
| 9658377 | Phase difference film layered body and method for producing the same having micrometer-scale particles in a subsequently-removed layer | Taku Hatano | 2017-05-23 |
| 9399317 | Retarder manufacturing method using cross-linked particles of a polymer having negative intrinsic birefringence | — | 2016-07-26 |