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Masao Takano
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Tokyo, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Method for manufacturing substrate and method for manufacturing sub...
Patent number
12,145,238
Issue date
Nov 19, 2024
Hoya Corporation
Masao Takano
B24 - GRINDING POLISHING
Information
Patent Grant
Hard disk drive spacer having chamfered surface and main surface wi...
Patent number
12,051,442
Issue date
Jul 30, 2024
Hoya Corporation
Masao Takano
G11 - INFORMATION STORAGE
Information
Patent Grant
Spacer and laminate
Patent number
11,839,950
Issue date
Dec 12, 2023
Hoya Corporation
Masao Takano
G11 - INFORMATION STORAGE
Information
Patent Grant
Method for manufacturing ring-shaped glass spacer
Patent number
11,705,158
Issue date
Jul 18, 2023
Hoya Corporation
Masao Takano
G11 - INFORMATION STORAGE
Information
Patent Grant
Spacer, laminate of substrates, method for manufacturing substrate,...
Patent number
11,471,993
Issue date
Oct 18, 2022
Hoya Corporation
Masao Takano
B32 - LAYERED PRODUCTS
Information
Patent Grant
Glass spacer and hard disk drive apparatus
Patent number
11,244,706
Issue date
Feb 8, 2022
Hoya Corporation
Masao Takano
G11 - INFORMATION STORAGE
Information
Patent Grant
Spacer and hard disk drive apparatus
Patent number
11,238,895
Issue date
Feb 1, 2022
Hoya Corporation
Masao Takano
G11 - INFORMATION STORAGE
Information
Patent Grant
Spacer and hard disk drive apparatus
Patent number
10,872,635
Issue date
Dec 22, 2020
Hoya Corporation
Masao Takano
G11 - INFORMATION STORAGE
Information
Patent Grant
Glass spacer and hard disk drive apparatus
Patent number
10,783,921
Issue date
Sep 22, 2020
Hoya Corporation
Masao Takano
G11 - INFORMATION STORAGE
Information
Patent Grant
Glass substrate for a magnetic disk, magnetic disk, and methods of...
Patent number
7,255,943
Issue date
Aug 14, 2007
Hoya Corporation
Takemi Miyamoto
G11 - INFORMATION STORAGE
Information
Patent Grant
Method of manufacturing a glass substrate and a magnetic recording...
Patent number
6,877,343
Issue date
Apr 12, 2005
Hoya Corporation
Tsuyoshi Watanabe
G11 - INFORMATION STORAGE
Information
Patent Grant
Magnetic recording medium using a glass substrate
Patent number
6,503,600
Issue date
Jan 7, 2003
Tsuyoshi Watanabe
G11 - INFORMATION STORAGE
Information
Patent Grant
Glass substrate for information recording medium
Patent number
6,277,465
Issue date
Aug 21, 2001
Hoya Corporation
Tsuyoshi Watanabe
C03 - GLASS MINERAL OR SLAG WOOL
Patents Applications
last 30 patents
Information
Patent Application
HARD DISK DRIVE
Publication number
20240347076
Publication date
Oct 17, 2024
HOYA CORPORATION
Masao TAKANO
G11 - INFORMATION STORAGE
Information
Patent Application
METHOD FOR MANUFACTURING SUBSTRATE AND METHOD FOR MANUFACTURING SUB...
Publication number
20240082979
Publication date
Mar 14, 2024
HOYA CORPORATION
Masao TAKANO
B24 - GRINDING POLISHING
Information
Patent Application
SPACER AND HARD DISK DRIVE DEVICE
Publication number
20230368815
Publication date
Nov 16, 2023
HOYA CORPORATION
Masao TAKANO
G11 - INFORMATION STORAGE
Information
Patent Application
SPACER AND LAMINATE
Publication number
20230015283
Publication date
Jan 19, 2023
HOYA CORPORATION
Masao TAKANO
B24 - GRINDING POLISHING
Information
Patent Application
METHOD FOR MANUFACTURING RING-SHAPED GLASS SPACER
Publication number
20220157340
Publication date
May 19, 2022
HOYA CORPORATION
Masao TAKANO
G11 - INFORMATION STORAGE
Information
Patent Application
SPACER AND HARD DISK DRIVE APPARATUS
Publication number
20210090603
Publication date
Mar 25, 2021
Hoya Corporation
Masao TAKANO
G11 - INFORMATION STORAGE
Information
Patent Application
SPACER, LAMINATE OF SUBSTRATES, METHOD FOR MANUFACTURING SUBSTRATE,...
Publication number
20210005220
Publication date
Jan 7, 2021
HOYA CORPORATION
Masao TAKANO
B24 - GRINDING POLISHING
Information
Patent Application
GLASS SPACER AND HARD DISK DRIVE APPARATUS
Publication number
20200395046
Publication date
Dec 17, 2020
Hoya Corporation
Masao TAKANO
G11 - INFORMATION STORAGE
Information
Patent Application
METHOD FOR MANUFACTURING DISK-SHAPED GLASS SUBSTRATE, METHOD FOR MA...
Publication number
20200270174
Publication date
Aug 27, 2020
HOYA CORPORATION
Masao TAKANO
B24 - GRINDING POLISHING
Information
Patent Application
SPACER AND HARD DISK DRIVE APPARATUS
Publication number
20200234731
Publication date
Jul 23, 2020
HOYA CORPORATION
Masao TAKANO
G11 - INFORMATION STORAGE
Information
Patent Application
GLASS SPACER AND HARD DISK DRIVE APPARATUS
Publication number
20200211596
Publication date
Jul 2, 2020
HOYA CORPORATION
Masao TAKANO
G11 - INFORMATION STORAGE
Information
Patent Application
Magentic Disk and Glass Substrate for Magnetic Disk
Publication number
20080020238
Publication date
Jan 24, 2008
Hirotaka Tanaka
G11 - INFORMATION STORAGE
Information
Patent Application
Glass substrate for a magnetic disk, magnetic disk, and methods of...
Publication number
20050008822
Publication date
Jan 13, 2005
Hoya Corporation
Takemi Miyamoto
G11 - INFORMATION STORAGE
Information
Patent Application
Glass substrate for information recording medium, method of manufac...
Publication number
20030113512
Publication date
Jun 19, 2003
Hoya Corporation
Tsuyoshi Watanabe
G11 - INFORMATION STORAGE
Information
Patent Application
Glass substrate for information recording medium, method of manufac...
Publication number
20010041271
Publication date
Nov 15, 2001
Hoya Corporation
Tsuyoshi Watanabe
C03 - GLASS MINERAL OR SLAG WOOL