Kazumi Chijiwa

Follow

Person

Tokyo, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Light guide plate, lighting apparatus, and display apparatus
- Patent number 12,038,594
- Issue date Jul 16, 2024
- Stanley Electric Co., Ltd.
- Kazumi Chijiwa
- G02 - OPTICS
Information Patent Grant
Surface light source device and prism sheet
- Patent number 10,036,844
- Issue date Jul 31, 2018
- Stanley Electric Co., Ltd.
- Yoji Oki
- G02 - OPTICS
Information Patent Grant
Light guide plate with sharp-edged prisms and side-edge type surfac...
- Patent number 9,366,798
- Issue date Jun 14, 2016
- Stanley Electric Co., Ltd.
- Kazumi Chijiwa
- G02 - OPTICS

Patents Applicationslast 30 patents

Information Patent Application
LIGHT GUIDE PLATE, LIGHTING APPARATUS, AND DISPLAY APPARATUS
- Publication number 20230341609
- Publication date Oct 26, 2023
- Stanley Electric Co., Ltd
- Kazumi CHIJIWA
- G02 - OPTICS
Information Patent Application
SURFACE LIGHT SOURCE DEVICE AND PRISM SHEET
- Publication number 20170023725
- Publication date Jan 26, 2017
- Stanley Electric Co., Ltd
- Yoji OKI
- G02 - OPTICS
Information Patent Application
LIGHT GUIDE PLATE WITH SHARP-EDGED PRISMS AND SIDE-EDGE TYPE SURFAC...
- Publication number 20150009711
- Publication date Jan 8, 2015
- Stanley Electric Co., Ltd
- Kazumi Chijiwa
- G02 - OPTICS