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Hirotaka Yanagisawa
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Azumino-shi, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Lens unit, projection optical system, and projector that accurately...
Patent number
11,940,664
Issue date
Mar 26, 2024
Seiko Epson Corporation
Hirotaka Yanagisawa
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Projection system and projector
Patent number
11,892,764
Issue date
Feb 6, 2024
Seiko Epson Corporation
Hirotaka Yanagisawa
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Projection system and projector having deflector and optical element
Patent number
11,822,224
Issue date
Nov 21, 2023
Seiko Epson Corporation
Hirotaka Yanagisawa
G02 - OPTICS
Information
Patent Grant
Optical system, projector, and imaging apparatus
Patent number
11,774,731
Issue date
Oct 3, 2023
Seiko Epson Corporation
Hirotaka Yanagisawa
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Optical system, projector, and imaging apparatus
Patent number
11,537,031
Issue date
Dec 27, 2022
Seiko Epson Corporation
Hirotaka Yanagisawa
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Projection system and projector
Patent number
11,385,532
Issue date
Jul 12, 2022
Seiko Epson Corporation
Hirotaka Yanagisawa
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Projection system and projector
Patent number
11,333,957
Issue date
May 17, 2022
Seiko Epson Corporation
Hirotaka Yanagisawa
G02 - OPTICS
Information
Patent Grant
Lens unit, projection optical system, and projector
Patent number
11,215,908
Issue date
Jan 4, 2022
Seiko Epson Corporation
Hirotaka Yanagisawa
G02 - OPTICS
Information
Patent Grant
Projection optical system, projection-type image display device, an...
Patent number
11,073,753
Issue date
Jul 27, 2021
Seiko Epson Corporation
Hirotaka Yanagisawa
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Projection optical system, projection-type image display device, im...
Patent number
11,073,754
Issue date
Jul 27, 2021
Seiko Epson Corporation
Hirotaka Yanagisawa
B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information
Patent Grant
Projection system, projection-type image display apparatus, and ima...
Patent number
11,073,749
Issue date
Jul 27, 2021
Seiko Epson Corporation
Hirotaka Yanagisawa
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Projector
Patent number
8,876,302
Issue date
Nov 4, 2014
Seiko Epson Corporation
Hirotaka Yanagisawa
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Projector
Patent number
8,491,131
Issue date
Jul 23, 2013
Seiko Epson Corporation
Hirotaka Yanagisawa
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Method for manufacture of reflecting mirror, reflecting mirror, ill...
Patent number
8,038,325
Issue date
Oct 18, 2011
Seiko Epson Corporation
Hirotaka Yanagisawa
F21 - LIGHTING
Information
Patent Grant
Projector having a shifted or rotated optical axis
Patent number
7,988,298
Issue date
Aug 2, 2011
Seiko Epson Corporation
Hirotaka Yanagisawa
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Integrator type illumination optical system and projector having th...
Patent number
6,860,607
Issue date
Mar 1, 2005
Seiko Epson Corporation
Hirotaka Yanagisawa
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Patents Applications
last 30 patents
Information
Patent Application
PROJECTION SYSTEM AND PROJECTOR
Publication number
20230367191
Publication date
Nov 16, 2023
SEIKO EPSON CORPORATION
Hirotaka YANAGISAWA
G02 - OPTICS
Information
Patent Application
PROJECTION SYSTEM AND PROJECTOR
Publication number
20230314763
Publication date
Oct 5, 2023
SEIKO EPSON CORPORATION
Hitoshi HIRANO
G02 - OPTICS
Information
Patent Application
PROJECTION SYSTEM AND PROJECTOR
Publication number
20230314764
Publication date
Oct 5, 2023
SEIKO EPSON CORPORATION
Hitoshi HIRANO
G02 - OPTICS
Information
Patent Application
PROJECTION SYSTEM AND PROJECTOR
Publication number
20230314777
Publication date
Oct 5, 2023
SEIKO EPSON CORPORATION
Hitoshi HIRANO
G02 - OPTICS
Information
Patent Application
PROJECTION SYSTEM AND PROJECTOR
Publication number
20230236491
Publication date
Jul 27, 2023
SEIKO EPSON CORPORATION
Hirotaka Yanagisawa
G02 - OPTICS
Information
Patent Application
ATTACHMENT OPTICAL SYSTEM AND PROJECTION DISPLAY SYSTEM
Publication number
20220326491
Publication date
Oct 13, 2022
SEIKO EPSON CORPORATION
Hirotaka Yanagisawa
G02 - OPTICS
Information
Patent Application
ATTACHMENT OPTICAL SYSTEM AND PROJECTION DISPLAY SYSTEM
Publication number
20220317428
Publication date
Oct 6, 2022
SEIKO EPSON CORPORATION
Hirotaka Yanagisawa
G02 - OPTICS
Information
Patent Application
OPTICAL SYSTEM, PROJECTOR, AND IMAGING APPARATUS
Publication number
20220066180
Publication date
Mar 3, 2022
SEIKO EPSON CORPORATION
Hirotaka YANAGISAWA
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
OPTICAL SYSTEM, PROJECTOR, AND IMAGING APPARATUS
Publication number
20220066296
Publication date
Mar 3, 2022
SEIKO EPSON CORPORATION
Hirotaka Yanagisawa
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
PROJECTION SYSTEM AND PROJECTOR
Publication number
20210232037
Publication date
Jul 29, 2021
SEIKO EPSON CORPORATION
Hirotaka Yanagisawa
G02 - OPTICS
Information
Patent Application
PROJECTION SYSTEM AND PROJECTOR
Publication number
20210232035
Publication date
Jul 29, 2021
SEIKO EPSON CORPORATION
Hirotaka Yanagisawa
G02 - OPTICS
Information
Patent Application
PROJECTION SYSTEM AND PROJECTOR
Publication number
20210232027
Publication date
Jul 29, 2021
SEIKO EPSON CORPORATION
Hirotaka Yanagisawa
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
PROJECTION SYSTEM AND PROJECTOR
Publication number
20210232033
Publication date
Jul 29, 2021
SEIKO EPSON CORPORATION
Hirotaka Yanagisawa
G02 - OPTICS
Information
Patent Application
LENS UNIT, PROJECTION OPTICAL SYSTEM, AND PROJECTOR
Publication number
20210191239
Publication date
Jun 24, 2021
SEIKO EPSON CORPORATION
Hirotaka Yanagisawa
G02 - OPTICS
Information
Patent Application
LENS UNIT, PROJECTION OPTICAL SYSTEM, AND PROJECTOR
Publication number
20210191092
Publication date
Jun 24, 2021
SEIKO EPSON CORPORATION
Hirotaka Yanagisawa
G02 - OPTICS
Information
Patent Application
PROJECTION SYSTEM AND PROJECTOR
Publication number
20210173292
Publication date
Jun 10, 2021
SEIKO EPSON CORPORATION
Hirotaka Yanagisawa
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
PROJECTION OPTICAL SYSTEM, PROJECTION-TYPE IMAGE DISPLAY DEVICE, AN...
Publication number
20200278600
Publication date
Sep 3, 2020
SEIKO EPSON CORPORATION
Hirotaka YANAGISAWA
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
PROJECTION OPTICAL SYSTEM, PROJECTION-TYPE IMAGE DISPLAY DEVICE, IM...
Publication number
20200278601
Publication date
Sep 3, 2020
SEIKO EPSON CORPORATION
Hirotaka YANAGISAWA
B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information
Patent Application
PROJECTION SYSTEM, PROJECTION-TYPE IMAGE DISPLAY APPARATUS, AND IMA...
Publication number
20200278595
Publication date
Sep 3, 2020
SEIKO EPSON CORPORATION
Hirotaka YANAGISAWA
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
PROJECTOR
Publication number
20100053558
Publication date
Mar 4, 2010
SEIKO EPSON CORPORATION
Hirotaka Yanagisawa
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
PROJECTOR
Publication number
20090180081
Publication date
Jul 16, 2009
SEIKO EPSON CORPORATION
Hirotaka YANAGISAWA
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
METHOD FOR MANUFACTURE OF REFLECTING MIRROR, REFLECTING MIRROR, ILL...
Publication number
20090097259
Publication date
Apr 16, 2009
SEIKO EPSON CORPORATION
Hirotaka Yanagisawa
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
PROJECTOR
Publication number
20080225238
Publication date
Sep 18, 2008
SEIKO EPSON CORPORATION
Hirotaka Yanagisawa
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
Method for manufacture of reflecting mirror, reflecting mirror, ill...
Publication number
20050190558
Publication date
Sep 1, 2005
SEIKO EPSON CORPORATION
Hirotaka Yanagisawa
H04 - ELECTRIC COMMUNICATION TECHNIQUE