Masafumi JO

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Saitama, JP

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Patents Grantslast 30 patents

Information Patent Grant
Deep ultraviolet LED and method for producing the same
- Patent number 11,309,454
- Issue date Apr 19, 2022
- Marubun Corporation
- Yukio Kashima
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Ultraviolet light-emitting diode and electric apparatus provided wi...
- Patent number 10,593,828
- Issue date Mar 17, 2020
- Riken
- Hideki Hirayama
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Crystal substrate, ultraviolet light-emitting device, and manufactu...
- Patent number 10,340,416
- Issue date Jul 2, 2019
- Riken
- Masafumi Jo
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Deep ultraviolet LED and method for manufacturing the same
- Patent number 9,929,317
- Issue date Mar 27, 2018
- Marubun Corporation
- Yukio Kashima
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Ultraviolet light-emitting diode and electric apparatus having the...
- Patent number 9,153,741
- Issue date Oct 6, 2015
- Riken
- Hideki Hirayama
- H01 - BASIC ELECTRIC ELEMENTS

Patents Applicationslast 30 patents

Information Patent Application
ULTRAVIOLET LIGHT EMITTING DIODE AND ELECTRIC DEVICE PROVIDED WITH...
- Publication number 20240339562
- Publication date Oct 10, 2024
- Riken
- Masafumi JO
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
DEEP ULTRAVIOLET LED AND METHOD FOR PRODUCING THE SAME
- Publication number 20210036186
- Publication date Feb 4, 2021
- MARUBUN CORPORATION
- Yukio KASHIMA
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
ULTRAVIOLET LIGHT-EMITTING DIODE AND ELECTRIC APPARATUS PROVIDED WI...
- Publication number 20180331250
- Publication date Nov 15, 2018
- Riken
- Hideki HIRAYAMA
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
CRYSTAL SUBSTRATE, ULTRAVIOLET LIGHT-EMITTING DEVICE, AND MANUFACTU...
- Publication number 20170250308
- Publication date Aug 31, 2017
- Riken
- Masafumi JO
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
ULTRAVIOLET LIGHT-EMITTING DIODE AND ELECTRIC APPARATUS HAVING THE...
- Publication number 20150311392
- Publication date Oct 29, 2015
- Riken
- Hideki HIRAYAMA
- H01 - BASIC ELECTRIC ELEMENTS