Tsutomu KAMADA

Follow

Person

Chigasaki-shi, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Optical connector
- Patent number 10,641,971
- Issue date May 5, 2020
- Sei Optifrontier Co., Ltd.
- Tsutomu Kamada
- G02 - OPTICS
Information Patent Grant
Optical connector
- Patent number 10,539,745
- Issue date Jan 21, 2020
- Sei Optifrontier Co., Ltd.
- Tsutomu Kamada
- G02 - OPTICS
Information Patent Grant
Optical connector, pin keeper, pin insertion jig, expansion member,...
- Patent number 10,114,179
- Issue date Oct 30, 2018
- Sei Optifrontier Co., Ltd.
- Tsutomu Kamada
- G02 - OPTICS
Information Patent Grant
Optical fiber with connector
- Patent number 9,958,620
- Issue date May 1, 2018
- Sei Optifrontier Co., Ltd.
- Kenichiro Ohtsuka
- G02 - OPTICS
Information Patent Grant
Optical fiber with connector
- Patent number 9,921,376
- Issue date Mar 20, 2018
- Sei Optifrontier Co., Ltd.
- Kenichiro Ohtsuka
- G02 - OPTICS
Information Patent Grant
Optical fiber with connector
- Patent number 9,804,344
- Issue date Oct 31, 2017
- Sei Optifrontier Co., Ltd.
- Kenichiro Ohtsuka
- G02 - OPTICS

Patents Applicationslast 30 patents

Information Patent Application
OPTICAL CONNECTOR FERRULE AND OPTICAL CONNECTOR
- Publication number 20190196117
- Publication date Jun 27, 2019
- Sumitomo Electric Industries, Ltd.
- Masaki OHMURA
- G02 - OPTICS
Information Patent Application
OPTICAL CONNECTOR FERRULE AND OPTICAL CONNECTOR
- Publication number 20190179087
- Publication date Jun 13, 2019
- Sumitomo Electric Industries, Ltd.
- Masaki OHMURA
- G02 - OPTICS
Information Patent Application
OPTICAL CONNECTOR
- Publication number 20190079250
- Publication date Mar 14, 2019
- SEI Optifrontier Co., Ltd.
- Tsutomu KAMADA
- G02 - OPTICS
Information Patent Application
OPTICAL CONNECTOR, PIN KEEPER, PIN INSERTION JIG, EXPANSION MEMBER,...
- Publication number 20170315308
- Publication date Nov 2, 2017
- SEI Optifrontier Co., Ltd.
- Tsutomu KAMADA
- G02 - OPTICS
Information Patent Application
OPTICAL CONNECTOR
- Publication number 20170254961
- Publication date Sep 7, 2017
- SEI Optifrontier Co., Ltd.
- Tsutomu KAMADA
- G02 - OPTICS
Information Patent Application
OPTICAL FIBER WITH CONNECTOR
- Publication number 20170160495
- Publication date Jun 8, 2017
- SEI Optifrontier Co., Ltd.
- Kenichiro OHTSUKA
- G02 - OPTICS