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Masatoshi Hayakawa
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Yokohama-shi, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Glass fine particle deposit and method for manufacturing glass preform
Patent number
12,012,349
Issue date
Jun 18, 2024
Sumitomo Electric Industries, Ltd.
Masatoshi Hayakawa
C03 - GLASS MINERAL OR SLAG WOOL
Information
Patent Grant
Optical fiber preform, method for manufacturing optical fiber prefo...
Patent number
11,378,737
Issue date
Jul 5, 2022
Sumitomo Electric Industries, Ltd.
Masatoshi Hayakawa
G02 - OPTICS
Information
Patent Grant
Optical fiber producing method and apparatus and optical fiber
Patent number
9,475,722
Issue date
Oct 25, 2016
Sumitomo Electric Industries, Ltd.
Tadashi Enomoto
C03 - GLASS MINERAL OR SLAG WOOL
Information
Patent Grant
Glass preform heating furnace
Patent number
9,120,694
Issue date
Sep 1, 2015
Sumitomo Electric Industries, Ltd.
Tadashi Enomoto
H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Patents Applications
last 30 patents
Information
Patent Application
GLASS FINE PARTICLE DEPOSIT AND METHOD FOR MANUFACTURING GLASS PREFORM
Publication number
20220162111
Publication date
May 26, 2022
Sumitomo Electric Industries, Ltd.
Masatoshi HAYAKAWA
C03 - GLASS MINERAL OR SLAG WOOL
Information
Patent Application
METHOD FOR MANUFACTURING GLASS FINE PARTICLE DEPOSIT AND METHOD FOR...
Publication number
20220033294
Publication date
Feb 3, 2022
Sumitomo Electric Industries, Ltd.
Masatoshi HAYAKAWA
C03 - GLASS MINERAL OR SLAG WOOL
Information
Patent Application
METHOD FOR PRODUCING GLASS PARTICULATE DEPOSIT
Publication number
20210246065
Publication date
Aug 12, 2021
Sumitomo Electric Industries, Ltd.
Masatoshi HAYAKAWA
C03 - GLASS MINERAL OR SLAG WOOL
Information
Patent Application
METHOD FOR MANUFACTURING GLASS PREFORM
Publication number
20210122664
Publication date
Apr 29, 2021
Sumitomo Electric Industries, Ltd.
Masatoshi HAYAKAWA
C03 - GLASS MINERAL OR SLAG WOOL
Information
Patent Application
METHOD FOR PRODUCING GLASS PARTICULATE DEPOSIT, METHOD FOR PRODUCIN...
Publication number
20200262735
Publication date
Aug 20, 2020
Sumitomo Electric Industries, Ltd.
Masatoshi HAYAKAWA
C03 - GLASS MINERAL OR SLAG WOOL
Information
Patent Application
OPTICAL FIBER PREFORM, METHOD FOR MANUFACTURING OPTICAL FIBER PREFO...
Publication number
20200247709
Publication date
Aug 6, 2020
Sumitomo Electric Industries, Ltd.
Masatoshi HAYAKAWA
C03 - GLASS MINERAL OR SLAG WOOL
Information
Patent Application
METHOD FOR PRODUCING GLASS FINE PARTICLE DEPOSIT, METHOD FOR PRODUC...
Publication number
20200223736
Publication date
Jul 16, 2020
Sumitomo Electric Industries, Ltd.
Masatoshi HAYAKAWA
C03 - GLASS MINERAL OR SLAG WOOL
Information
Patent Application
OPTICAL FIBER PRODUCING METHOD AND APPARATUS AND OPTICAL FIBER
Publication number
20140226948
Publication date
Aug 14, 2014
Tadashi Enomoto
G02 - OPTICS
Information
Patent Application
GLASS PREFORM HEATING FURNACE
Publication number
20140196505
Publication date
Jul 17, 2014
Sumitomo Electric Industries, Ltd.
Tadashi Enomoto
C03 - GLASS MINERAL OR SLAG WOOL