Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8355203 | Optical functional film, retardation film, composition for forming optical functional layer and producing method of optical functional film | Keiji Kashima, Kenji Shirai, Takashi Kuroda | 2013-01-15 |
| 8124198 | Retardation film and method for producing the same, optical functional film, polarizing film, and display device | Keiji Kashima, Kenji Shirai | 2012-02-28 |
| 8064136 | Optical functional film, retardation film, composition for forming optical functional layer and producing method of optical functional film | Keiji Kashima, Kenji Shirai, Takashi Kuroda | 2011-11-22 |