HIROSHI KOYAMA

Person

IBARAKI, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Light reflector, and planar light source device and illuminating de...
- Patent number 8,950,920
- Issue date Feb 10, 2015
- Yupo Corporation
- Takahiko Ueda
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information Patent Grant
Light reflector and planar light source device
- Patent number 8,542,443
- Issue date Sep 24, 2013
- Yupo Corporation
- Takahiko Ueda
- F21 - LIGHTING
Information Patent Grant
Light reflector, planar light source and illumination device using...
- Patent number 8,408,774
- Issue date Apr 2, 2013
- Yupo Corporation
- Takahiko Ueda
- F21 - LIGHTING
Information Patent Grant
Light reflector and planar light source device
- Patent number 7,548,372
- Issue date Jun 16, 2009
- Yupo Corporation
- Takahiko Ueda
- G02 - OPTICS
Information Patent Grant
Optical reflector and planar light source device
- Patent number 7,344,283
- Issue date Mar 18, 2008
- Yupo Corporation
- Takahiko Ueda
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information Patent Grant
Semitransparent reflector
- Patent number 7,298,438
- Issue date Nov 20, 2007
- Yupo Corporation
- Takahiko Ueda
- G02 - OPTICS
Information Patent Grant
Optically semi-transmission reflection material
- Patent number 7,166,338
- Issue date Jan 23, 2007
- Yupo Corporation
- Hiroshi Koyama
- G02 - OPTICS
Information Patent Grant
Planar light source device and liquid-crystal display device
- Patent number 7,004,612
- Issue date Feb 28, 2006
- Yupo Corporation
- Tomotsugu Takahashi
- G02 - OPTICS
Information Patent Grant
Light reflector
- Patent number 6,914,719
- Issue date Jul 5, 2005
- Yupo Corporation
- Hiroshi Koyama
- G02 - OPTICS
Information Patent Grant
Support and thermal transfer image-recording material
- Patent number 6,627,298
- Issue date Sep 30, 2003
- Yupo Corporation
- Hiroshi Koyama
- Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
Information Patent Grant
Light reflector
- Patent number 6,533,440
- Issue date Mar 18, 2003
- Yupo Corporation
- Hiroshi Koyama
- G02 - OPTICS
Information Patent Grant
Illuminated signboard
- Patent number 5,680,720
- Issue date Oct 28, 1997
- Oji Yuka Goseishi Co., Ltd.
- Harumitsu Asazuma
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information Patent Grant
Synthetic paper with multi-layer structure and excellent printing p...
- Patent number 5,667,872
- Issue date Sep 16, 1997
- Oji Yuka Goseishi Co., Ltd.
- Akihiko Ohno
- B32 - LAYERED PRODUCTS
Information Patent Grant
Thermal recording material
- Patent number 5,474,966
- Issue date Dec 12, 1995
- Oji Yuka Goseishi Co., Ltd.
- Harumitsu Asazuma
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS

Patents Applicationslast 30 patents

Information Patent Application
LIGHT REFLECTOR, AND PLANAR LIGHT SOURCE DEVICE AND ILLUMINATING DE...
- Publication number 20110176299
- Publication date Jul 21, 2011
- Yupo corporation
- Takahiko Ueda
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information Patent Application
LIGHT REFLECTOR, PLANAR LIGHT SOURCE AND ILLUMINATION DEVICE USING...
- Publication number 20090262539
- Publication date Oct 22, 2009
- YUPO CORPORATION
- Takahiko Ueda
- G02 - OPTICS
Information Patent Application
Light Reflector and Planar Light Source Device
- Publication number 20080259473
- Publication date Oct 23, 2008
- YUPO CORPORATION
- Takahiko Ueda
- G02 - OPTICS
Information Patent Application
Light Reflector And Planar Light Source Device
- Publication number 20080130295
- Publication date Jun 5, 2008
- Yupo corporation
- Takahiko Ueda
- G02 - OPTICS
Information Patent Application
Light-reflector and planar light source using same
- Publication number 20060158585
- Publication date Jul 20, 2006
- YUPO CORPORATION
- Takahiko Ueda
- G02 - OPTICS
Information Patent Application
Optical reflector and planar light source device
- Publication number 20060126344
- Publication date Jun 15, 2006
- YUPO CORPORATION
- Takahiko Ueda
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information Patent Application
Light reflector
- Publication number 20050191464
- Publication date Sep 1, 2005
- Yupo corporation
- Tomotsugu Takahashi
- G02 - OPTICS
Information Patent Application
Planar light source device and liquid-crystal display device
- Publication number 20050174508
- Publication date Aug 11, 2005
- YUPO CORPORATION
- Tomotsugu Takahashi
- G02 - OPTICS
Information Patent Application
Semitransparent reflector
- Publication number 20040246415
- Publication date Dec 9, 2004
- YUPO CORPORATION
- Takahiko Ueda
- G02 - OPTICS
Information Patent Application
Light reflector
- Publication number 20040228146
- Publication date Nov 18, 2004
- Hiroshi Koyama
- G02 - OPTICS
Information Patent Application
SYNTHETIC PAPER WITH EXCELLENT PRINTABILITY
- Publication number 20030077432
- Publication date Apr 24, 2003
- MASAAKI YAMANAKA
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Application
Optically semi-transmission reflection material
- Publication number 20020122146
- Publication date Sep 5, 2002
- Yupo corporation
- Hiroshi Koyama
- B32 - LAYERED PRODUCTS
Information Patent Application
Support and thermal transfer image-recording material
- Publication number 20020039640
- Publication date Apr 4, 2002
- Yupo CORPORATION
- Hiroshi Koyama
- B32 - LAYERED PRODUCTS
Information Patent Application
Light reflector
- Publication number 20020015299
- Publication date Feb 7, 2002
- Yupo corporation
- Hiroshi Koyama
- G02 - OPTICS

HIROSHI KOYAMA

Person

Patents Grantslast 30 patents

Light reflector, and planar light source device and illuminating de...

Light reflector and planar light source device

Light reflector, planar light source and illumination device using...

Light reflector and planar light source device

Optical reflector and planar light source device

Semitransparent reflector

Optically semi-transmission reflection material

Planar light source device and liquid-crystal display device

Light reflector

Support and thermal transfer image-recording material

Light reflector

Illuminated signboard

Synthetic paper with multi-layer structure and excellent printing p...

Thermal recording material

Patents Applicationslast 30 patents

LIGHT REFLECTOR, AND PLANAR LIGHT SOURCE DEVICE AND ILLUMINATING DE...

LIGHT REFLECTOR, PLANAR LIGHT SOURCE AND ILLUMINATION DEVICE USING...

Light Reflector and Planar Light Source Device

Light Reflector And Planar Light Source Device

Light-reflector and planar light source using same

Optical reflector and planar light source device

Light reflector

Planar light source device and liquid-crystal display device

Semitransparent reflector

Light reflector

SYNTHETIC PAPER WITH EXCELLENT PRINTABILITY

Optically semi-transmission reflection material

Support and thermal transfer image-recording material

Light reflector