Yoshizumi Ishikawa

Follow

Person

Tokyo, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Optical device having EO polymer core and specially-polymerized clad
- Patent number 10,598,849
- Issue date Mar 24, 2020
- Sumitomo Osaka Cement Co., Ltd.
- Shingo Takano
- G02 - OPTICS
Information Patent Grant
Optical device
- Patent number 10,088,698
- Issue date Oct 2, 2018
- Sumitomo Osaka Cement Co., Ltd.
- Yoshizumi Ishikawa
- G02 - OPTICS
Information Patent Grant
Optical device
- Patent number 9,977,270
- Issue date May 22, 2018
- Sumitomo Osaka Cement Co., Ltd.
- Yoshizumi Ishikawa
- G02 - OPTICS
Information Patent Grant
Transparent zirconia dispersion and zirconia particle-containing re...
- Patent number 7,985,476
- Issue date Jul 26, 2011
- Sumitomo Osaka Cement Co., Ltd.
- Yasuyuki Kurino
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...

Patents Applicationslast 30 patents

Information Patent Application
OPTICAL DEVICE
- Publication number 20190302355
- Publication date Oct 3, 2019
- Sumitomo Osaka Cement Co., Ltd.
- Shingo TAKANO
- G02 - OPTICS
Information Patent Application
OPTICAL DEVICE
- Publication number 20180284488
- Publication date Oct 4, 2018
- Sumitomo Osaka Cement Co., Ltd.
- Yoshizumi Ishikawa
- G02 - OPTICS
Information Patent Application
OPTICAL DEVICE
- Publication number 20170227798
- Publication date Aug 10, 2017
- Sumitomo Osaka Cement Co., Ltd.
- Yoshizumi ISHIKAWA
- G02 - OPTICS
Information Patent Application
Transparent Inorganic Oxide Dispersion and Iorganic Oxide Particle-...
- Publication number 20090140284
- Publication date Jun 4, 2009
- Sumitomo Osaka Cement Co., Ltd.
- Yasuyuki Kurino
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...