Yoshihiro Kumagai

Person

Yokohama, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Method for producing concave-convex substrate using sol-gel method,...
- Patent number 9,221,214
- Issue date Dec 29, 2015
- JX Nippon Oil & Energy Corporation
- Madoka Takahashi
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Grant
Liquid crystal cell with twist angle from 180 to 270 degrees and tw...
- Patent number 7,019,804
- Issue date Mar 28, 2006
- Nippon Oil Corporation
- Yoshihiro Kumagai
- G02 - OPTICS
Information Patent Grant
Complex diffraction device
- Patent number 6,750,941
- Issue date Jun 15, 2004
- Nippon Mitsubishi Oil Corporation
- Yasushi Satoh
- G02 - OPTICS
Information Patent Grant
Circular polarizer and liquid crystal display
- Patent number 6,628,369
- Issue date Sep 30, 2003
- Nippon Oil Corporation
- Yoshihiro Kumagai
- G02 - OPTICS
Information Patent Grant
Laminated transparent structure for reflective display
- Patent number 6,327,089
- Issue date Dec 4, 2001
- Central Glass Company, Limited
- Kenji Hosaki
- B32 - LAYERED PRODUCTS
Information Patent Grant
Optical film
- Patent number 6,210,872
- Issue date Apr 3, 2001
- Nippon Mitsubishi Oil Corporation
- Kenji Hosaki
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...

Patents Applicationslast 30 patents

Information Patent Application
INFORMATION PROCESSING SYSTEM AND INFORMATION PROCESSING METHOD
- Publication number 20230368049
- Publication date Nov 16, 2023
- Sony Semiconductor Solutions Corporation
- Munehiro Shimomura
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
DATA TRANSMISSION DEVICE, DATA TRANSMISSION METHOD, INFORMATION PRO...
- Publication number 20230370570
- Publication date Nov 16, 2023
- Sony Semiconductor Solutions Corporation
- Yoshimi OGAWA
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
INFORMATION PROCESSING APPARATUS, INFORMATION PROCESSING METHOD, AN...
- Publication number 20230290137
- Publication date Sep 14, 2023
- Sony Semiconductor Solutions Corporation
- HIROTAKA ISHIKAWA
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
MANUFACTURING METHOD AND MANUFACTURING DEVICE FOR OPTICAL SUBSTRATE...
- Publication number 20140357012
- Publication date Dec 4, 2014
- Shigetaka TORIYAMA
- G02 - OPTICS
Information Patent Application
METHOD FOR PRODUCING CONCAVE-CONVEX SUBSTRATE USING SOL-GEL METHOD,...
- Publication number 20140231776
- Publication date Aug 21, 2014
- JX NIPPON OIL & ENERGY CORPORATION
- Madoka TAKAHASHI
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Application
Liquid crystal display
- Publication number 20040246418
- Publication date Dec 9, 2004
- Yoshihiro Kumagai
- G02 - OPTICS
Information Patent Application
Circular polarizer and liquid crystal display
- Publication number 20030090619
- Publication date May 15, 2003
- NIPPON OIL CORPORATION
- Yoshihiro Kumagai
- G02 - OPTICS
Information Patent Application
Complex diffraction device
- Publication number 20020101560
- Publication date Aug 1, 2002
- Nippon Mitsubishi Oil Corporation
- Yasushi Satoh
- G02 - OPTICS

Yoshihiro Kumagai

Person

Patents Grantslast 30 patents

Method for producing concave-convex substrate using sol-gel method,...

Liquid crystal cell with twist angle from 180 to 270 degrees and tw...

Complex diffraction device

Circular polarizer and liquid crystal display

Laminated transparent structure for reflective display

Optical film

Patents Applicationslast 30 patents

INFORMATION PROCESSING SYSTEM AND INFORMATION PROCESSING METHOD

DATA TRANSMISSION DEVICE, DATA TRANSMISSION METHOD, INFORMATION PRO...

INFORMATION PROCESSING APPARATUS, INFORMATION PROCESSING METHOD, AN...

MANUFACTURING METHOD AND MANUFACTURING DEVICE FOR OPTICAL SUBSTRATE...

METHOD FOR PRODUCING CONCAVE-CONVEX SUBSTRATE USING SOL-GEL METHOD,...

Liquid crystal display

Circular polarizer and liquid crystal display

Complex diffraction device