Kohji SAKAI

Person

Tokyo, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Apparatus configured to fly light-absorbing material, apparatus con...
- Patent number 11,740,453
- Issue date Aug 29, 2023
- Ricoh Company, Ltd.
- Hiroyuki Suhara
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Object detector, sensing device, and mobile object apparatus
- Patent number 11,150,345
- Issue date Oct 19, 2021
- Ricoh Company, Ltd.
- Kohji Sakai
- G01 - MEASURING TESTING
Information Patent Grant
Semiconductor laser, light source device, image forming apparatus,...
- Patent number 10,700,491
- Issue date Jun 30, 2020
- Ricoh Company, Ltd.
- Kohji Sakai
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Object detector and sensor
- Patent number 10,591,602
- Issue date Mar 17, 2020
- Ricoh Company, Ltd.
- Kazuhiro Akatsu
- G01 - MEASURING TESTING
Information Patent Grant
Microlens array, image display apparatus, object apparatus, and mold
- Patent number 10,534,112
- Issue date Jan 14, 2020
- Ricoh Company, Ltd.
- Kohji Sakai
- B60 - VEHICLES IN GENERAL
Information Patent Grant
Object detecting apparatus
- Patent number 10,371,817
- Issue date Aug 6, 2019
- Ricoh Company, Ltd.
- Kohji Sakai
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Object detector and sensor
- Patent number 10,302,767
- Issue date May 28, 2019
- Ricoh Company, Ltd.
- Kazuhiro Akatsu
- H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Light-source device, image display apparatus, and object apparatus
- Patent number 10,302,942
- Issue date May 28, 2019
- Ricoh Company, Ltd.
- Kohji Sakai
- G02 - OPTICS
Information Patent Grant
Wavelength estimation device, light-source device, image display ap...
- Patent number 10,209,133
- Issue date Feb 19, 2019
- Ricoh Company, Ltd.
- Kohji Sakai
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Microlens array, image display apparatus, object apparatus, and mold
- Patent number 10,203,431
- Issue date Feb 12, 2019
- Ricoh Company, Ltd.
- Kohji Sakai
- B60 - VEHICLES IN GENERAL
Information Patent Grant
Semiconductor laser driving apparatus, optical scanning apparatus,...
- Patent number 10,148,064
- Issue date Dec 4, 2018
- Ricoh Company, Ltd.
- Kohji Sakai
- G02 - OPTICS
Information Patent Grant
Range finder, mobile object and range-finding method
- Patent number 10,132,926
- Issue date Nov 20, 2018
- Ricoh Company, Ltd.
- Masataka Uehira
- G01 - MEASURING TESTING
Information Patent Grant
Light irradiation apparatus and information rewritable system
- Patent number 10,071,586
- Issue date Sep 11, 2018
- Ricoh Company, Ltd.
- Masataka Uehira
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Object detecting apparatus
- Patent number 10,031,228
- Issue date Jul 24, 2018
- Ricoh Company, Ltd.
- Kohji Sakai
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Object detector and sensing apparatus
- Patent number 9,981,604
- Issue date May 29, 2018
- Ricoh Company, Ltd.
- Kohji Sakai
- B60 - VEHICLES IN GENERAL
Information Patent Grant
Optical scanning apparatus and image forming device
- Patent number 9,925,798
- Issue date Mar 27, 2018
- Ricoh Company, Ltd.
- Naoto Watanabe
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Object detection device and sensing apparatus
- Patent number 9,891,432
- Issue date Feb 13, 2018
- Ricoh Company, Ltd.
- Kohji Sakai
- G02 - OPTICS
Information Patent Grant
Optical scanner, object detector, and sensing apparatus
- Patent number 9,846,236
- Issue date Dec 19, 2017
- Ricoh Company, Ltd.
- Shigeaki Imai
- G01 - MEASURING TESTING
Information Patent Grant
Object detector and sensor
- Patent number 9,817,123
- Issue date Nov 14, 2017
- Ricoh Company, Ltd.
- Kazuhiro Akatsu
- G01 - MEASURING TESTING
Information Patent Grant
Optical scanning apparatus and image forming device
- Patent number 9,625,711
- Issue date Apr 18, 2017
- Ricoh Company, Ltd.
- Naoto Watanabe
- G02 - OPTICS
Information Patent Grant
Object detector and sensor
- Patent number 9,568,605
- Issue date Feb 14, 2017
- Ricoh Company, Ltd.
- Kazuhiro Akatsu
- G01 - MEASURING TESTING
Information Patent Grant
Optical scanning device, method of adjusting optical scanning devic...
- Patent number 9,557,563
- Issue date Jan 31, 2017
- Ricoh Company, Ltd.
- Mitsuo Suzuki
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Planar light source device and liquid crystal display device equipp...
- Patent number 9,448,436
- Issue date Sep 20, 2016
- Sharp Kabushiki Kaisha
- Kohji Sakai
- G02 - OPTICS
Information Patent Grant
Edge-lit surface light source device
- Patent number 9,435,938
- Issue date Sep 6, 2016
- Sharp Kabushiki Kaisha
- Atsushi Yamashita
- F21 - LIGHTING
Information Patent Grant
Optical scanning apparatus, optical writing apparatus, and image fo...
- Patent number RE45918
- Issue date Mar 8, 2016
- Ricoh Company, Limited
- Kenichiroh Saisho
- 001 -
Information Patent Grant
Image forming method of exposing the surface of an image carrier wi...
- Patent number 9,235,154
- Issue date Jan 12, 2016
- Ricoh Company, Limited
- Hiroyuki Suhara
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Optical scanning device and image forming apparatus
- Patent number 8,922,863
- Issue date Dec 30, 2014
- Ricoh Company, Ltd.
- Toshiaki Tokita
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Optical scanning device and image forming apparatus
- Patent number 8,913,096
- Issue date Dec 16, 2014
- Ricoh Company, Limited
- Kohji Sakai
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Optical scanning device and image forming apparatus
- Patent number 8,848,009
- Issue date Sep 30, 2014
- Ricoh Company, Ltd.
- Naoto Watanabe
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Exposure device and image forming apparatus
- Patent number 8,786,658
- Issue date Jul 22, 2014
- Ricoh Company, Ltd.
- Nobuaki Kubo
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY

Patents Applicationslast 30 patents

Information Patent Application
APPARATUS CONFIGURED TO MODEL THREE-DIMENSIONAL MODELED OBJECT, APP...
- Publication number 20210339469
- Publication date Nov 4, 2021
- RICOH COMPANY, LTD.
- Takashi FUJITA
- B33 - ADDITIVE MANUFACTURING TECHNOLOGY
Information Patent Application
IRRADIATION OPTICAL SYSTEM, LIGHT IRRADIATION DEVICE, AND THREE-DIM...
- Publication number 20210041677
- Publication date Feb 11, 2021
- Hirotoshi NAKAYAMA
- G02 - OPTICS
Information Patent Application
APPARATUS CONFIGURED TO FLY LIGHT-ABSORBING MATERIAL, APPARATUS CON...
- Publication number 20200379251
- Publication date Dec 3, 2020
- RICOH COMPANY, LTD.
- Hiroyuki SUHARA
- G01 - MEASURING TESTING
Information Patent Application
OBJECT DETECTOR AND SENSOR
- Publication number 20190242997
- Publication date Aug 8, 2019
- Kazuhiro AKATSU
- G01 - MEASURING TESTING
Information Patent Application
MICROLENS ARRAY, IMAGE DISPLAY APPARATUS, OBJECT APPARATUS, AND MOLD
- Publication number 20190121002
- Publication date Apr 25, 2019
- Kohji SAKAI
- B60 - VEHICLES IN GENERAL
Information Patent Application
SEMICONDUCTOR LASER, LIGHT SOURCE DEVICE, IMAGE FORMING APPARATUS,...
- Publication number 20190097396
- Publication date Mar 28, 2019
- Kohji SAKAI
- G02 - OPTICS
Information Patent Application
OBJECT DETECTOR, SENSING DEVICE, AND MOBILE OBJECT APPARATUS
- Publication number 20190056496
- Publication date Feb 21, 2019
- Kohji SAKAI
- G01 - MEASURING TESTING
Information Patent Application
LIGHT IRRADIATION APPARATUS AND INFORMATION REWRITABLE SYSTEM
- Publication number 20180290476
- Publication date Oct 11, 2018
- Masataka UEHIRA
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Application
OBJECT DETECTING APPARATUS
- Publication number 20180284270
- Publication date Oct 4, 2018
- Kohji Sakai
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
MICROLENS ARRAY, IMAGE DISPLAY APPARATUS, OBJECT APPARATUS, AND MOLD
- Publication number 20180088255
- Publication date Mar 29, 2018
- Kohji Sakai
- B60 - VEHICLES IN GENERAL
Information Patent Application
LIGHT-SOURCE DEVICE, IMAGE DISPLAY APPARATUS, AND OBJECT APPARATUS
- Publication number 20180067308
- Publication date Mar 8, 2018
- Kohji SAKAI
- G02 - OPTICS
Information Patent Application
OBJECT DETECTOR AND SENSOR
- Publication number 20180038959
- Publication date Feb 8, 2018
- Kazuhiro AKATSU
- G01 - MEASURING TESTING
Information Patent Application
WAVELENGTH ESTIMATION DEVICE, LIGHT-SOURCE DEVICE, IMAGE DISPLAY AP...
- Publication number 20170276546
- Publication date Sep 28, 2017
- Kohji SAKAI
- G01 - MEASURING TESTING
Information Patent Application
OPTICAL SCANNING APPARATUS AND IMAGE FORMING DEVICE
- Publication number 20170160667
- Publication date Jun 8, 2017
- Naoto WATANABE
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
OBJECT DETECTOR AND SENSOR
- Publication number 20170082747
- Publication date Mar 23, 2017
- KAZUHIRO AKATSU
- G01 - MEASURING TESTING
Information Patent Application
LIGHT IRRADIATION APPARATUS AND INFORMATION REWRITABLE SYSTEM
- Publication number 20170001459
- Publication date Jan 5, 2017
- Masataka UEHIRA
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Application
SEMICONDUCTOR LASER DRIVING APPARATUS, OPTICAL SCANNING APPARATUS,...
- Publication number 20160261090
- Publication date Sep 8, 2016
- Kohji Sakai
- G01 - MEASURING TESTING
Information Patent Application
OBJECT DETECTOR AND SENSING APPARATUS
- Publication number 20160096474
- Publication date Apr 7, 2016
- Kohji SAKAI
- B60 - VEHICLES IN GENERAL
Information Patent Application
OPTICAL SCANNER, OBJECT DETECTOR, AND SENSING APPARATUS
- Publication number 20160061955
- Publication date Mar 3, 2016
- Shigeaki Imai
- G01 - MEASURING TESTING
Information Patent Application
OPTICAL SCANNING DEVICE, METHOD OF ADJUSTING OPTICAL SCANNING DEVIC...
- Publication number 20150346484
- Publication date Dec 3, 2015
- Mitsuo SUZUKI
- G02 - OPTICS
Information Patent Application
RANGE FINDER, MOBILE OBJECT AND RANGE-FINDING METHOD
- Publication number 20150268343
- Publication date Sep 24, 2015
- Masataka UEHIRA
- G01 - MEASURING TESTING
Information Patent Application
EDGE-LIT SURFACE LIGHT SOURCE DEVICE
- Publication number 20150226911
- Publication date Aug 13, 2015
- Sharp Kabushiki Kaisha
- Atsushi Yamashita
- G02 - OPTICS
Information Patent Application
OBJECT DETECTION DEVICE AND SENSING APPARATUS
- Publication number 20150204977
- Publication date Jul 23, 2015
- Kohji Sakai
- G02 - OPTICS
Information Patent Application
OBJECT DETECTOR AND SENSOR
- Publication number 20150160341
- Publication date Jun 11, 2015
- Kazuhiro AKATSU
- G01 - MEASURING TESTING
Information Patent Application
OBJECT DETECTING APPARATUS
- Publication number 20150124238
- Publication date May 7, 2015
- Kohji Sakai
- G01 - MEASURING TESTING
Information Patent Application
IMAGE FORMING METHOD AND IMAGE FORMING APPARATUS
- Publication number 20150042740
- Publication date Feb 12, 2015
- Hiroyuki SUHARA
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
PLANAR LIGHT SOURCE DEVICE AND LIQUID CRYSTAL DISPLAY DEVICE EQUIPP...
- Publication number 20140368768
- Publication date Dec 18, 2014
- Kohji Sakai
- G02 - OPTICS
Information Patent Application
EXPOSURE DEVICE AND IMAGE FORMING APPARATUS
- Publication number 20130250029
- Publication date Sep 26, 2013
- Nobuaki KUBO
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
OPTICAL SCANNING APPARATUS AND IMAGE FORMING DEVICE
- Publication number 20130155166
- Publication date Jun 20, 2013
- Naoto WATANABE
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Application
OPTICAL SCANNING DEVICE AND IMAGE FORMING APPARATUS
- Publication number 20130076851
- Publication date Mar 28, 2013
- Naoto WATANABE
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS

Kohji SAKAI

Person

Patents Grantslast 30 patents

Apparatus configured to fly light-absorbing material, apparatus con...

Object detector, sensing device, and mobile object apparatus

Semiconductor laser, light source device, image forming apparatus,...

Object detector and sensor

Microlens array, image display apparatus, object apparatus, and mold

Object detecting apparatus

Object detector and sensor

Light-source device, image display apparatus, and object apparatus

Wavelength estimation device, light-source device, image display ap...

Microlens array, image display apparatus, object apparatus, and mold

Semiconductor laser driving apparatus, optical scanning apparatus,...

Range finder, mobile object and range-finding method

Light irradiation apparatus and information rewritable system

Object detecting apparatus

Object detector and sensing apparatus

Optical scanning apparatus and image forming device

Object detection device and sensing apparatus

Optical scanner, object detector, and sensing apparatus

Object detector and sensor

Optical scanning apparatus and image forming device

Object detector and sensor

Optical scanning device, method of adjusting optical scanning devic...

Planar light source device and liquid crystal display device equipp...

Edge-lit surface light source device

Optical scanning apparatus, optical writing apparatus, and image fo...

Image forming method of exposing the surface of an image carrier wi...

Optical scanning device and image forming apparatus

Optical scanning device and image forming apparatus

Optical scanning device and image forming apparatus

Exposure device and image forming apparatus

Patents Applicationslast 30 patents

APPARATUS CONFIGURED TO MODEL THREE-DIMENSIONAL MODELED OBJECT, APP...

IRRADIATION OPTICAL SYSTEM, LIGHT IRRADIATION DEVICE, AND THREE-DIM...

APPARATUS CONFIGURED TO FLY LIGHT-ABSORBING MATERIAL, APPARATUS CON...

OBJECT DETECTOR AND SENSOR

MICROLENS ARRAY, IMAGE DISPLAY APPARATUS, OBJECT APPARATUS, AND MOLD

SEMICONDUCTOR LASER, LIGHT SOURCE DEVICE, IMAGE FORMING APPARATUS,...

OBJECT DETECTOR, SENSING DEVICE, AND MOBILE OBJECT APPARATUS

LIGHT IRRADIATION APPARATUS AND INFORMATION REWRITABLE SYSTEM

OBJECT DETECTING APPARATUS

MICROLENS ARRAY, IMAGE DISPLAY APPARATUS, OBJECT APPARATUS, AND MOLD

LIGHT-SOURCE DEVICE, IMAGE DISPLAY APPARATUS, AND OBJECT APPARATUS

OBJECT DETECTOR AND SENSOR

WAVELENGTH ESTIMATION DEVICE, LIGHT-SOURCE DEVICE, IMAGE DISPLAY AP...

OPTICAL SCANNING APPARATUS AND IMAGE FORMING DEVICE

OBJECT DETECTOR AND SENSOR

LIGHT IRRADIATION APPARATUS AND INFORMATION REWRITABLE SYSTEM

SEMICONDUCTOR LASER DRIVING APPARATUS, OPTICAL SCANNING APPARATUS,...

OBJECT DETECTOR AND SENSING APPARATUS

OPTICAL SCANNER, OBJECT DETECTOR, AND SENSING APPARATUS

OPTICAL SCANNING DEVICE, METHOD OF ADJUSTING OPTICAL SCANNING DEVIC...

RANGE FINDER, MOBILE OBJECT AND RANGE-FINDING METHOD

EDGE-LIT SURFACE LIGHT SOURCE DEVICE

OBJECT DETECTION DEVICE AND SENSING APPARATUS

OBJECT DETECTOR AND SENSOR

OBJECT DETECTING APPARATUS

IMAGE FORMING METHOD AND IMAGE FORMING APPARATUS

PLANAR LIGHT SOURCE DEVICE AND LIQUID CRYSTAL DISPLAY DEVICE EQUIPP...

EXPOSURE DEVICE AND IMAGE FORMING APPARATUS

OPTICAL SCANNING APPARATUS AND IMAGE FORMING DEVICE

OPTICAL SCANNING DEVICE AND IMAGE FORMING APPARATUS