Hirotoshi Nakayama

Person

Kanagawa, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Projection optical system including movable lens groups, a non-mova...
- Patent number 11,042,082
- Issue date Jun 22, 2021
- Ricoh Company, Ltd.
- Yohei Takano
- G02 - OPTICS
Information Patent Grant
Projection optical system unit, projection optical system, and proj...
- Patent number 10,890,840
- Issue date Jan 12, 2021
- Ricoh Company, Ltd.
- Yohei Takano
- G02 - OPTICS
Information Patent Grant
Light source device and image display apparatus
- Patent number 10,725,369
- Issue date Jul 28, 2020
- Ricoh Company, Ltd.
- Kasumi Nakamura
- F21 - LIGHTING
Information Patent Grant
Projection optical system including movable lens groups and image d...
- Patent number 10,241,308
- Issue date Mar 26, 2019
- Ricoh Company, Ltd.
- Yohei Takano
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Projection optical system and image display apparatus including a r...
- Patent number 9,766,438
- Issue date Sep 19, 2017
- Ricoh Company, Ltd.
- Yohei Takano
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Projection optical system and image display apparatus
- Patent number 9,261,767
- Issue date Feb 16, 2016
- Ricoh Company, Ltd.
- Yohei Takano
- G02 - OPTICS
Information Patent Grant
Scanner lens, image reader and image forming device
- Patent number 8,885,232
- Issue date Nov 11, 2014
- Ricoh Company, Ltd.
- Hirotoshi Nakayama
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Image-forming lens, image reader, and image-forming device
- Patent number 8,854,701
- Issue date Oct 7, 2014
- Ricoh Company, Ltd.
- Hirotoshi Nakayama
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
PATTERN FORMING APPARATUS
- Publication number 20230278141
- Publication date Sep 7, 2023
- Keiichi SERIZAWA
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Application
SUBSTRATE, CONTAINER, PRODUCT, PRODUCTION METHOD, AND PRODUCTION AP...
- Publication number 20220410608
- Publication date Dec 29, 2022
- Rie HIRAYAMA
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Application
MEDIUM, CONTAINER, OBJECT-HOLDING CONTAINER, MARKING DEVICE, AND ME...
- Publication number 20220305812
- Publication date Sep 29, 2022
- Kazuki FUNAHASHI
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Application
DEVICE
- Publication number 20210402805
- Publication date Dec 30, 2021
- RICOH COMPANY, LTD.
- Asato TAMURA
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
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
FABRICATING APPARATUS, FABRICATING METHOD, AND FABRICATING SYSTEM
- Publication number 20200262153
- Publication date Aug 20, 2020
- RICOH COMPANY, LTD.
- Tsuyoshi Arao
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Application
LIGHT SOURCE DEVICE AND IMAGE DISPLAY APPARATUS
- Publication number 20200064719
- Publication date Feb 27, 2020
- Kasumi Nakamura
- G02 - OPTICS
Information Patent Application
PROJECTION OPTICAL SYSTEM UNIT, PROJECTION OPTICAL SYSTEM, AND PROJ...
- Publication number 20190285979
- Publication date Sep 19, 2019
- Yohei TAKANO
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
PROJECTION OPTICAL SYSTEM INCLUDING MOVABLE LENS GROUPS AND IMAGE D...
- Publication number 20190219801
- Publication date Jul 18, 2019
- RICOH COMPANY, LTD.
- Yohei TAKANO
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
PROJECTION OPTICAL SYSTEM AND IMAGE DISPLAY APPARATUS
- Publication number 20180003934
- Publication date Jan 4, 2018
- Ricoh Company, Ltd.
- Yohei TAKANO
- G02 - OPTICS
Information Patent Application
PROJECTION OPTICAL SYSTEM AND IMAGE DISPLAY APPARATUS
- Publication number 20160103304
- Publication date Apr 14, 2016
- Yohei Takano
- G02 - OPTICS
Information Patent Application
PROJECTION OPTICAL SYSTEM AND IMAGE DISPLAY APPARATUS
- Publication number 20140340658
- Publication date Nov 20, 2014
- Yohei Takano
- G02 - OPTICS
Information Patent Application
SCANNER LENS, IMAGE READER AND IMAGE FORMING DEVICE
- Publication number 20140043662
- Publication date Feb 13, 2014
- Hirotoshi Nakayama
- G02 - OPTICS
Information Patent Application
IMAGE-FORMING LENS, IMAGE READER, AND IMAGE-FORMING DEVICE
- Publication number 20130242362
- Publication date Sep 19, 2013
- Hirotoshi NAKAYAMA
- G02 - OPTICS

Hirotoshi Nakayama

Person

Patents Grantslast 30 patents

Projection optical system including movable lens groups, a non-mova...

Projection optical system unit, projection optical system, and proj...

Light source device and image display apparatus

Projection optical system including movable lens groups and image d...

Projection optical system and image display apparatus including a r...

Projection optical system and image display apparatus

Scanner lens, image reader and image forming device

Image-forming lens, image reader, and image-forming device

Patents Applicationslast 30 patents

PATTERN FORMING APPARATUS

SUBSTRATE, CONTAINER, PRODUCT, PRODUCTION METHOD, AND PRODUCTION AP...

MEDIUM, CONTAINER, OBJECT-HOLDING CONTAINER, MARKING DEVICE, AND ME...

DEVICE

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

FABRICATING APPARATUS, FABRICATING METHOD, AND FABRICATING SYSTEM

LIGHT SOURCE DEVICE AND IMAGE DISPLAY APPARATUS

PROJECTION OPTICAL SYSTEM UNIT, PROJECTION OPTICAL SYSTEM, AND PROJ...

PROJECTION OPTICAL SYSTEM INCLUDING MOVABLE LENS GROUPS AND IMAGE D...

PROJECTION OPTICAL SYSTEM AND IMAGE DISPLAY APPARATUS

PROJECTION OPTICAL SYSTEM AND IMAGE DISPLAY APPARATUS

PROJECTION OPTICAL SYSTEM AND IMAGE DISPLAY APPARATUS

SCANNER LENS, IMAGE READER AND IMAGE FORMING DEVICE

IMAGE-FORMING LENS, IMAGE READER, AND IMAGE-FORMING DEVICE