Tsukasa Maruyama

Person

Tokyo, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Method of manufacturing optical semiconductor device and optical se...
- Patent number 12,113,155
- Issue date Oct 8, 2024
- Dowa Electronics Materials Co., Ltd.
- Tsukasa Maruyama
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Light-emitting element lamp and method for manufacturing the same
- Patent number 12,107,199
- Issue date Oct 1, 2024
- Dowa Electronics Materials Co., Ltd.
- Tsukasa Maruyama
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Anti-reflection film and deep ultraviolet light-emitting device
- Patent number 11,009,629
- Issue date May 18, 2021
- Dowa Electronics Materials Co., Ltd.
- Tsukasa Maruyama
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Light emitting device and method for producing same
- Patent number 8,469,760
- Issue date Jun 25, 2013
- Dowa Electronics Materials Co., Ltd.
- Tsukasa Maruyama
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Light-emitting device and manufacturing method thereof
- Patent number 8,253,326
- Issue date Aug 28, 2012
- Dowa Electronics Materials Co., Ltd.
- Tsukasa Maruyama
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Light-emitting device and manufacturing method thereof
- Patent number 8,164,254
- Issue date Apr 24, 2012
- Dowa Electronics Materials Co., Ltd.
- Tsukasa Maruyama
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Light emitting device and method for producing same
- Patent number 7,956,536
- Issue date Jun 7, 2011
- Dowa Electronics Materials Co., Ltd.
- Tsukasa Maruyama
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Light emitting device and method for producing same
- Patent number 7,878,876
- Issue date Feb 1, 2011
- Dowa Electronics Materials Co., Ltd.
- Tsukasa Maruyama
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Light-emitting device and manufacturing method thereof
- Patent number 7,812,516
- Issue date Oct 12, 2010
- Dowa Electronics Materials Co., Ltd.
- Tsukasa Maruyama
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Lamp apparatus for use in optical communication and a process for p...
- Patent number 6,483,623
- Issue date Nov 19, 2002
- Dowa Mining Co., Ltd.
- Tsukasa Maruyama
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Photodetection method and photodetection device and photodetection/...
- Patent number 6,346,701
- Issue date Feb 12, 2002
- Dowa Mining Co., Ltd.
- Tsukasa Maruyama
- G01 - MEASURING TESTING
Information Patent Grant
Component device for optical communication
- Patent number 6,061,160
- Issue date May 9, 2000
- Dowa Mining Co., Ltd.
- Tsukasa Maruyama
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Lamp apparatus for optical communication
- Patent number 5,959,755
- Issue date Sep 28, 1999
- Dowa Mining Co., Ltd.
- Tsukasa Maruyama
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
METHOD OF MANUFACTURING OPTICAL SEMICONDUCTOR DEVICE AND OPTICAL SE...
- Publication number 20220293825
- Publication date Sep 15, 2022
- DOWA ELECTRONICS MATERIALS CO., LTD.
- Tsukasa MARUYAMA
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
LIGHT-EMITTING ELEMENT LAMP AND METHOD FOR MANUFACTURING THE SAME
- Publication number 20220262992
- Publication date Aug 18, 2022
- DOWA ELECTRONICS MATERIALS CO., LTD.
- Tsukasa MARUYAMA
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
ANTI-REFLECTION FILM AND DEEP ULTRAVIOLET LIGHT-EMITTING DEVICE
- Publication number 20200124770
- Publication date Apr 23, 2020
- DOWA Electronics Materials Co., Ltd.
- Tsukasa MARUYAMA
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
Light-emitting device and manufacturing method thereof
- Publication number 20100289405
- Publication date Nov 18, 2010
- DOWA ELECTRONICS MATERIALS CO., LTD.
- Tsukasa MARUYAMA
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
LIGHT EMITTING DEVICE AND METHOD FOR PRODUCING SAME
- Publication number 20100013375
- Publication date Jan 21, 2010
- DOWA ELECTRONICS MATERIALS CO., LTD.
- Tsukasa Maruyama
- H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information Patent Application
LIGHT EMITTING DEVICE AND METHOD FOR PRODUCING SAME
- Publication number 20100013374
- Publication date Jan 21, 2010
- DOWA ELECTRONICS MATERIALS CO., LTD.
- Tsukasa Maruyama
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Application
Light-emitting device and manufacturing method thereof
- Publication number 20080150416
- Publication date Jun 26, 2008
- DOWA ELECTRONICS MATERIALS CO., LTD.
- Tsukasa MARUYAMA
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
Light-emitting device and manufacturing method thereof
- Publication number 20080122343
- Publication date May 29, 2008
- DOWA ELECTRONICS MATERIALS CO., LTD.
- Tsukasa MARUYAMA
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
LIGHT EMITTING DEVICE AND METHOD FOR PRODUCING SAME
- Publication number 20070228933
- Publication date Oct 4, 2007
- DOWA ELECTRONICS MATERIALS CO., LTD.
- Tsukasa Maruyama
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Application
LIGHT EMITTING DEVICE AND METHOD FOR PRODUCING SAME
- Publication number 20070228949
- Publication date Oct 4, 2007
- DOWA ELECTRONICS MATERIALS CO., LTD.
- Tsukasa Maruyama
- H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR

Tsukasa Maruyama

Person

Patents Grantslast 30 patents

Method of manufacturing optical semiconductor device and optical se...

Light-emitting element lamp and method for manufacturing the same

Anti-reflection film and deep ultraviolet light-emitting device

Light emitting device and method for producing same

Light-emitting device and manufacturing method thereof

Light-emitting device and manufacturing method thereof

Light emitting device and method for producing same

Light emitting device and method for producing same

Light-emitting device and manufacturing method thereof

Lamp apparatus for use in optical communication and a process for p...

Photodetection method and photodetection device and photodetection/...

Component device for optical communication

Lamp apparatus for optical communication

Patents Applicationslast 30 patents

METHOD OF MANUFACTURING OPTICAL SEMICONDUCTOR DEVICE AND OPTICAL SE...

LIGHT-EMITTING ELEMENT LAMP AND METHOD FOR MANUFACTURING THE SAME

ANTI-REFLECTION FILM AND DEEP ULTRAVIOLET LIGHT-EMITTING DEVICE

Light-emitting device and manufacturing method thereof

LIGHT EMITTING DEVICE AND METHOD FOR PRODUCING SAME

LIGHT EMITTING DEVICE AND METHOD FOR PRODUCING SAME

Light-emitting device and manufacturing method thereof

Light-emitting device and manufacturing method thereof

LIGHT EMITTING DEVICE AND METHOD FOR PRODUCING SAME

LIGHT EMITTING DEVICE AND METHOD FOR PRODUCING SAME