Seiji Sakai

Person

Tokyo, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Insertion instrument
- Patent number 11,822,068
- Issue date Nov 21, 2023
- Olympus Corporation
- Seiji Sakai
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
Surface light source device and display device
- Patent number 10,509,160
- Issue date Dec 17, 2019
- Mitsubishi Electric Corporation
- Yusuke Maki
- G02 - OPTICS
Information Patent Grant
Endoscope having image pickup sensor and first and second light blo...
- Patent number 10,067,333
- Issue date Sep 4, 2018
- Olympus Corporation
- Seiji Sakai
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Point light source, planar light source device, and display device
- Patent number 9,638,852
- Issue date May 2, 2017
- Mitsubishi Electric Corporation
- Seiji Sakai
- G02 - OPTICS
Information Patent Grant
Area light source device and display device using same
- Patent number 9,500,795
- Issue date Nov 22, 2016
- Mitsubishi Electric Corporation
- Kenji Itoga
- G02 - OPTICS
Information Patent Grant
Planar light source apparatus and display apparatus using same
- Patent number 9,360,613
- Issue date Jun 7, 2016
- Mitsubishi Electric Corporation
- Seiji Sakai
- G02 - OPTICS
Information Patent Grant
Surface light source apparatus and display apparatus using same
- Patent number 9,274,265
- Issue date Mar 1, 2016
- Mitsubishi Electric Corporation
- Seiji Sakai
- G02 - OPTICS
Information Patent Grant
Display apparatus and head-up display system having the same
- Patent number 9,188,779
- Issue date Nov 17, 2015
- Mitsubishi Electric Corporation
- Seiji Sakai
- G02 - OPTICS
Information Patent Grant
Planar light source device and display apparatus incorporating same
- Patent number 9,182,538
- Issue date Nov 10, 2015
- Mitsubishi Electric Corporation
- Seiji Sakai
- G02 - OPTICS
Information Patent Grant
Electronic endoscope
- Patent number 9,007,449
- Issue date Apr 14, 2015
- Olympus Medical Systems Corp.
- Takahiko Mitani
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
Illumination device and liquid crystal display having a light guide...
- Patent number 8,885,118
- Issue date Nov 11, 2014
- Mitsubishi Electric Corporation
- Akimasa Yuuki
- G02 - OPTICS
Information Patent Grant
Electronic endoscope apparatus
- Patent number 8,425,405
- Issue date Apr 23, 2013
- Olympus Medical Systems Corp.
- Takahiko Mitani
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
Image pickup apparatus, electronic endoscope, and lens unit
- Patent number 8,427,533
- Issue date Apr 23, 2013
- Olympus Medical Systems Corp.
- Seiji Sakai
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
Endoscopic image pickup unit
- Patent number 8,360,965
- Issue date Jan 29, 2013
- Olympus Medical Systems Corp.
- Toru Kuchimaru
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
Actuator apparatus and image pickup unit
- Patent number 7,961,412
- Issue date Jun 14, 2011
- Olympus Medical Systems Corp.
- Seiji Iwasaki
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
Surface light source device and display device using the same
- Patent number 7,762,705
- Issue date Jul 27, 2010
- Mitsubishi Electric Corporation
- Seiji Sakai
- G02 - OPTICS
Information Patent Grant
Surface light source device
- Patent number 7,708,444
- Issue date May 4, 2010
- Mitsubishi Denki Kabushiki Kaisha
- Seiji Sakai
- G02 - OPTICS
Information Patent Grant
Surface light source device and liquid crystal display device
- Patent number 7,656,398
- Issue date Feb 2, 2010
- Mitsubishi Denki Kabushiki Kaisha
- Seiji Sakai
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information Patent Grant
Surface light source device and display device using same
- Patent number 7,641,376
- Issue date Jan 5, 2010
- Mitsubishi Electric Corporation
- Seiji Sakai
- G02 - OPTICS
Information Patent Grant
Surface light source device
- Patent number 7,604,389
- Issue date Oct 20, 2009
- Mitsubishi Electric Corporation
- Seiji Sakai
- G02 - OPTICS
Information Patent Grant
Light source device and liquid display device
- Patent number 7,578,610
- Issue date Aug 25, 2009
- Mitsubishi Electric Corporation
- Takuya Sakamoto
- G02 - OPTICS
Information Patent Grant
Planar light source device
- Patent number 7,441,938
- Issue date Oct 28, 2008
- Mitsubishi Electric Corporation
- Seiji Sakai
- G02 - OPTICS
Information Patent Grant
Planar light source device and display device using the same
- Patent number 7,393,128
- Issue date Jul 1, 2008
- Mitsubishi Denki Kabushiki Kaisha
- Seiji Sakai
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information Patent Grant
Planar light source unit and image display apparatus using the same
- Patent number 7,384,179
- Issue date Jun 10, 2008
- Mitsubishi Electric Corporation
- Seiji Sakai
- G02 - OPTICS
Information Patent Grant
Plane light source device and display device provided with the same
- Patent number 7,364,336
- Issue date Apr 29, 2008
- Mitsubishi Denki Kabushiki Kaisha
- Akihiro Mori
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information Patent Grant
Planar light source device and display device using the same device
- Patent number 7,350,951
- Issue date Apr 1, 2008
- Mitsubishi Denki Kabushiki Kaisha
- Seiji Sakai
- G02 - OPTICS
Information Patent Grant
Planar light source device and display device using the same
- Patent number 7,300,184
- Issue date Nov 27, 2007
- Mitsubishi Denki Kabushiki Kaisha
- Koji Ichikawa
- G02 - OPTICS
Information Patent Grant
Planar light source device and display device using the same
- Patent number 7,229,198
- Issue date Jun 12, 2007
- Mitsubishi Denki Kabushiki Kaisha
- Seiji Sakai
- G02 - OPTICS
Information Patent Grant
Planar light source apparatus and liquid display apparatus
- Patent number 7,201,488
- Issue date Apr 10, 2007
- Mitsubishi Denki Kabushiki Kaisha
- Takuya Sakamoto
- F21 - LIGHTING
Information Patent Grant
Planar light source device, liquid crystal display apparatus, and d...
- Patent number 6,964,500
- Issue date Nov 15, 2005
- Advanced Display Inc.
- Seiji Sakai
- H01 - BASIC ELECTRIC ELEMENTS

Patents Applicationslast 30 patents

Information Patent Application
OPTICAL DEVICE AND ENDOSCOPE
- Publication number 20240103340
- Publication date Mar 28, 2024
- OLYMPUS CORPORATION
- Jun SHINZATO
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
INSERTION INSTRUMENT
- Publication number 20210109311
- Publication date Apr 15, 2021
- OLYMPUS CORPORATION
- Seiji SAKAI
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Application
SURFACE LIGHT SOURCE DEVICE AND DISPLAY DEVICE
- Publication number 20180239081
- Publication date Aug 23, 2018
- Mitsubishi Electric Corporation
- Yusuke MAKI
- G02 - OPTICS
Information Patent Application
IMAGE PICKUP UNIT AND ENDOSCOPE
- Publication number 20160266373
- Publication date Sep 15, 2016
- OLYMPUS CORPORATION
- Seiji SAKAI
- G02 - OPTICS
Information Patent Application
AREA LIGHT SOURCE DEVICE AND DISPLAY DEVICE USING SAME
- Publication number 20150192724
- Publication date Jul 9, 2015
- Mitsubishi Electric Corporation
- Kenji Itoga
- G02 - OPTICS
Information Patent Application
PLANAR LIGHT SOURCE DEVICE AND DISPLAY DEVICE HAVING THE SAME
- Publication number 20150146453
- Publication date May 28, 2015
- Mitsubishi Electric Corporation
- Seiji SAKAI
- G02 - OPTICS
Information Patent Application
POINT LIGHT SOURCE, PLANAR LIGHT SOURCE DEVICE, AND DISPLAY DEVICE
- Publication number 20140355305
- Publication date Dec 4, 2014
- Mitsubishi Electric Corporation
- Seiji SAKAI
- G02 - OPTICS
Information Patent Application
PLANAR LIGHT SOURCE DEVICE AND DISPLAY APPARATUS INCORPORATING SAME
- Publication number 20140133180
- Publication date May 15, 2014
- MITSUBISHI ELECTRIC CORPORATION
- Seiji SAKAI
- G02 - OPTICS
Information Patent Application
PLANAR LIGHT SOURCE APPARATUS AND DISPLAY APPARATUS EQUIPPED WITH T...
- Publication number 20130300981
- Publication date Nov 14, 2013
- Mitsubishi Electric Corporation
- Seiji SAKAI
- G02 - OPTICS
Information Patent Application
DISPLAY APPARATUS AND HEAD-UP DISPLAY SYSTEM HAVING THE SAME
- Publication number 20130265646
- Publication date Oct 10, 2013
- Mitsubishi Electric Corporation
- Seiji SAKAI
- G02 - OPTICS
Information Patent Application
PLANAR LIGHT SOURCE APPARATUS AND DISPLAY APPARATUS USING SAME
- Publication number 20120307519
- Publication date Dec 6, 2012
- Mitsubishi Electric Corporation
- Seiji SAKAI
- G02 - OPTICS
Information Patent Application
SURFACE LIGHT SOURCE APPARATUS AND DISPLAY APPARATUS USING SAME
- Publication number 20120140519
- Publication date Jun 7, 2012
- Mitsubishi Electric Corporation
- Seiji SAKAI
- G02 - OPTICS
Information Patent Application
ILLUMINATION DEVICE AND LIQUID CRYSTAL DISPLAY
- Publication number 20120127400
- Publication date May 24, 2012
- MITSUBISHI ELECTRIC CORPORATION
- Akimasa YUUKI
- G02 - OPTICS
Information Patent Application
PLANAR LIGHT SOURCE DEVICE AND DISPLAY APPARATUS INCORPORATING SAME
- Publication number 20100079980
- Publication date Apr 1, 2010
- MITSUBISHI ELECTRIC CORPORATION
- Seiji SAKAI
- G02 - OPTICS
Information Patent Application
ENDOSCOPIC IMAGE PICKUP UNIT
- Publication number 20100063361
- Publication date Mar 11, 2010
- OLYMPUS MEDICAL SYSTEMS CORP.
- Toru KUCHIMARU
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Application
ACTUATOR APPARATUS AND IMAGE PICKUP UNIT
- Publication number 20090303619
- Publication date Dec 10, 2009
- OLYMPUS MEDICAL SYSTEMS CORP.
- Seiji IWASAKI
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Application
ELECTRONIC ENDOSCOPE APPARATUS
- Publication number 20090292169
- Publication date Nov 26, 2009
- OLYMPUS MEDICAL SYSTEMS CORP.
- Takahiko MITANI
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Application
IMAGE PICKUP DEVICE, ELECTRONIC ENDOSCOPE AND LENS UNIT
- Publication number 20090185032
- Publication date Jul 23, 2009
- OLYMPUS MEDICAL SYSTEMS CORP.
- Seiji SAKAI
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Application
PLANAR LIGHT SOURCE DEVICE AND DISPLAY DEVICE
- Publication number 20080291694
- Publication date Nov 27, 2008
- MITSUBISHI ELECTRIC CORPORATION
- Seiji SAKAI
- G02 - OPTICS
Information Patent Application
SURFACE LIGHT SOURCE DEVICE AND DISPLAY APPARATUS
- Publication number 20080211990
- Publication date Sep 4, 2008
- MITSUBISHI ELECTRIC CORPORATION
- Seiji SAKAI
- G02 - OPTICS
Information Patent Application
SURFACE LIGHT SOURCE DEVICE
- Publication number 20070247870
- Publication date Oct 25, 2007
- MITSUBISHI ELECTRIC CORPORATION
- Seiji Sakai
- G02 - OPTICS
Information Patent Application
PLANAR LIGHT SOURCE UNIT AND IMAGE DISPLAY APPARATUS USING THE SAME
- Publication number 20070165424
- Publication date Jul 19, 2007
- Mitsubishi Electric Corporation
- Seiji SAKAI
- G02 - OPTICS
Information Patent Application
PLANAR LIGHT SOURCE DEVICE
- Publication number 20070165421
- Publication date Jul 19, 2007
- MITSUBISHI ELECTRIC CORPORATION
- Seiji Sakai
- G02 - OPTICS
Information Patent Application
LIGHT SOURCE DEVICE AND LIQUID DISPLAY DEVICE
- Publication number 20070165425
- Publication date Jul 19, 2007
- Mitsubishi Electric Corporation
- Takuya Sakamoto
- G02 - OPTICS
Information Patent Application
PLANAR LIGHT SOURCE DEVICE AND DISPLAY DEVICE USING THE SAME DEVICE
- Publication number 20070147036
- Publication date Jun 28, 2007
- MITSUBISHI ELECTRIC CORPORATION
- Seiji Sakai
- G02 - OPTICS
Information Patent Application
SURFACE LIGHT SOURCE DEVICE AND DISPLAY DEVICE USING THE SAME
- Publication number 20070147073
- Publication date Jun 28, 2007
- MITSUBISHI ELECTRIC CORPORATION
- Seiji Sakai
- G02 - OPTICS
Information Patent Application
SURFACE LIGHT SOURCE DEVICE AND DISPLAY DEVICE USING SAME
- Publication number 20070147074
- Publication date Jun 28, 2007
- MITSUBISHI ELECTRIC CORPORATION
- Seiji SAKAI
- G02 - OPTICS
Information Patent Application
Electronic endoscope
- Publication number 20070118019
- Publication date May 24, 2007
- OLYMPUS MEDICAL SYSTEMS CORP.
- Takahiko Mitani
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Application
Planar light source device and display device using the same
- Publication number 20060262530
- Publication date Nov 23, 2006
- Mitsubishi Denki Kabushiki Kaisha
- Seiji Sakai
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information Patent Application
Planar light source device and display device using the same
- Publication number 20060181901
- Publication date Aug 17, 2006
- Mitsubishi Denki Kabushiki Kaisha
- Seiji Sakai
- G02 - OPTICS

Seiji Sakai

Person

Patents Grantslast 30 patents

Insertion instrument

Surface light source device and display device

Endoscope having image pickup sensor and first and second light blo...

Point light source, planar light source device, and display device

Area light source device and display device using same

Planar light source apparatus and display apparatus using same

Surface light source apparatus and display apparatus using same

Display apparatus and head-up display system having the same

Planar light source device and display apparatus incorporating same

Electronic endoscope

Illumination device and liquid crystal display having a light guide...

Electronic endoscope apparatus

Image pickup apparatus, electronic endoscope, and lens unit

Endoscopic image pickup unit

Actuator apparatus and image pickup unit

Surface light source device and display device using the same

Surface light source device

Surface light source device and liquid crystal display device

Surface light source device and display device using same

Surface light source device

Light source device and liquid display device

Planar light source device

Planar light source device and display device using the same

Planar light source unit and image display apparatus using the same

Plane light source device and display device provided with the same

Planar light source device and display device using the same device

Planar light source device and display device using the same

Planar light source device and display device using the same

Planar light source apparatus and liquid display apparatus

Planar light source device, liquid crystal display apparatus, and d...

Patents Applicationslast 30 patents

OPTICAL DEVICE AND ENDOSCOPE

INSERTION INSTRUMENT

SURFACE LIGHT SOURCE DEVICE AND DISPLAY DEVICE

IMAGE PICKUP UNIT AND ENDOSCOPE

AREA LIGHT SOURCE DEVICE AND DISPLAY DEVICE USING SAME

PLANAR LIGHT SOURCE DEVICE AND DISPLAY DEVICE HAVING THE SAME

POINT LIGHT SOURCE, PLANAR LIGHT SOURCE DEVICE, AND DISPLAY DEVICE

PLANAR LIGHT SOURCE DEVICE AND DISPLAY APPARATUS INCORPORATING SAME

PLANAR LIGHT SOURCE APPARATUS AND DISPLAY APPARATUS EQUIPPED WITH T...

DISPLAY APPARATUS AND HEAD-UP DISPLAY SYSTEM HAVING THE SAME

PLANAR LIGHT SOURCE APPARATUS AND DISPLAY APPARATUS USING SAME

SURFACE LIGHT SOURCE APPARATUS AND DISPLAY APPARATUS USING SAME

ILLUMINATION DEVICE AND LIQUID CRYSTAL DISPLAY

PLANAR LIGHT SOURCE DEVICE AND DISPLAY APPARATUS INCORPORATING SAME

ENDOSCOPIC IMAGE PICKUP UNIT

ACTUATOR APPARATUS AND IMAGE PICKUP UNIT

ELECTRONIC ENDOSCOPE APPARATUS

IMAGE PICKUP DEVICE, ELECTRONIC ENDOSCOPE AND LENS UNIT

PLANAR LIGHT SOURCE DEVICE AND DISPLAY DEVICE

SURFACE LIGHT SOURCE DEVICE AND DISPLAY APPARATUS

SURFACE LIGHT SOURCE DEVICE

PLANAR LIGHT SOURCE UNIT AND IMAGE DISPLAY APPARATUS USING THE SAME

PLANAR LIGHT SOURCE DEVICE

LIGHT SOURCE DEVICE AND LIQUID DISPLAY DEVICE

PLANAR LIGHT SOURCE DEVICE AND DISPLAY DEVICE USING THE SAME DEVICE

SURFACE LIGHT SOURCE DEVICE AND DISPLAY DEVICE USING THE SAME

SURFACE LIGHT SOURCE DEVICE AND DISPLAY DEVICE USING SAME

Electronic endoscope

Planar light source device and display device using the same

Planar light source device and display device using the same