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Takuo Hiratani
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Osaka, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Semiconductor optical device and method for manufacturing the same
Patent number
12,158,609
Issue date
Dec 3, 2024
Sumitomo Electric Industries, Ltd.
Takuo Hiratani
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Semiconductor optical device and method for manufacturing the same
Patent number
11,777,274
Issue date
Oct 3, 2023
Sumitomo Electric Industries, Ltd.
Takuo Hiratani
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Semiconductor optical device and method for producing semiconductor...
Patent number
11,735,888
Issue date
Aug 22, 2023
Sumitomo Electric Industries, Ltd.
Naoki Fujiwara
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Semiconductor optical device
Patent number
11,527,866
Issue date
Dec 13, 2022
Sumitomo Electric Industries, Ltd.
Naoki Fujiwara
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Optical semiconductor device and method for manufacturing optical s...
Patent number
11,393,945
Issue date
Jul 19, 2022
Sumitomo Electric Industries, Ltd.
Hideki Yagi
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Semiconductor integrated optical device, and method of fabricating...
Patent number
10,969,543
Issue date
Apr 6, 2021
Sumitomo Electric Industries, Ltd.
Takuo Hiratani
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Asymmetrical spot-size converter and method of manufacturing spot-s...
Patent number
10,725,241
Issue date
Jul 28, 2020
Sumitomo Electric Industries, Ltd.
Naoya Kono
G02 - OPTICS
Patents Applications
last 30 patents
Information
Patent Application
OPTICAL FILTER
Publication number
20240418938
Publication date
Dec 19, 2024
Sumitomo Electric Industries, Ltd.
Takuo HIRATANI
G02 - OPTICS
Information
Patent Application
SEMICONDUCTOR OPTICAL DEVICE AND METHOD FOR PRODUCING SEMICONDUCTOR...
Publication number
20230275400
Publication date
Aug 31, 2023
Sumitomo Electric Industries, Ltd.
Naoki FUJIWARA
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
OPTICAL FILTER AND WAVELENGTH TUNABLE LASER ELEMENT
Publication number
20230089696
Publication date
Mar 23, 2023
Sumitomo Electric Industries, Ltd.
Takuo HIRATANI
G02 - OPTICS
Information
Patent Application
SEMICONDUCTOR OPTICAL DEVICE AND METHOD FOR MANUFACTURING THE SAME
Publication number
20220247155
Publication date
Aug 4, 2022
Sumitomo Electric Industries, Ltd.
Takuo HIRATANI
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
SEMICONDUCTOR OPTICAL DEVICE AND METHOD FOR MANUFACTURING THE SAME
Publication number
20220206226
Publication date
Jun 30, 2022
Sumitomo Electric Industries, Ltd.
Takuo HIRATANI
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
SEMICONDUCTOR OPTICAL DEVICE AND METHOD FOR MANUFACTURING THE SAME
Publication number
20220158412
Publication date
May 19, 2022
Sumitomo Electric Industries, Ltd.
Takuo HIRATANI
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
SEMICONDUCTOR OPTICAL DEVICE AND METHOD FOR PRODUCING SEMICONDUCTOR...
Publication number
20210249840
Publication date
Aug 12, 2021
Sumitomo Electric Industries, Ltd.
Naoki FUJIWARA
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
SEMICONDUCTOR OPTICAL DEVICE AND METHOD FOR PRODUCING SEMICONDUCTOR...
Publication number
20210143609
Publication date
May 13, 2021
Sumitomo Electric Industries, Ltd.
Takuo HIRATANI
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
SEMICONDUCTOR OPTICAL DEVICE
Publication number
20210126428
Publication date
Apr 29, 2021
Sumitomo Electric Industries, Ltd.
Naoki FUJIWARA
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
SEMICONDUCTOR LASER DIODE AND METHOD FOR PRODUCING SEMICONDUCTOR LA...
Publication number
20210126424
Publication date
Apr 29, 2021
Sumitomo Electric Industries, Ltd.
Yuki ITO
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
SEMICONDUCTOR INTEGRATED OPTICAL DEVICE, AND METHOD OF FABRICATING...
Publication number
20200326476
Publication date
Oct 15, 2020
Sumitomo Electric Industries, Ltd.
Takuo HIRATANI
G02 - OPTICS
Information
Patent Application
OPTICAL SEMICONDUCTOR DEVICE AND METHOD FOR MANUFACTURING OPTICAL S...
Publication number
20200303903
Publication date
Sep 24, 2020
Sumitomo Electric Industries, Ltd.
Hideki YAGI
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
SPOT-SIZE CONVERTER AND METHOD OF MANUFACTURING SPOT-SIZE CONVERTER
Publication number
20190391332
Publication date
Dec 26, 2019
SUMITOMO ELECTRONIC INDUSTRIES, LTD.
Naoya Kono
G02 - OPTICS