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Yasuhiko Tsukikawa
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Tokyo, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Semiconductor memory device
Patent number
11,200,945
Issue date
Dec 14, 2021
Zentel Japan Corporation
Takashi Kubo
G11 - INFORMATION STORAGE
Information
Patent Grant
Semiconductor memory device comprising an interface conforming to J...
Patent number
10,991,418
Issue date
Apr 27, 2021
Zentel Japan Corporation
Masaru Haraguchi
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Semiconductor device and level conversion circuit
Patent number
7,288,965
Issue date
Oct 30, 2007
Renesas Technology Corp.
Kyoji Yamasaki
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Grant
Semiconductor device and level conversion circuit
Patent number
7,161,387
Issue date
Jan 9, 2007
Renesas Technology Corp.
Kyoji Yamasaki
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Grant
Semiconductor memory device driven with low voltage
Patent number
7,102,935
Issue date
Sep 5, 2006
Renesas Technology Corp.
Takeo Miki
G11 - INFORMATION STORAGE
Information
Patent Grant
Semiconductor memory device having dummy word line
Patent number
7,072,204
Issue date
Jul 4, 2006
Renesas Technology Corp.
Yasuhiko Tsukikawa
G11 - INFORMATION STORAGE
Information
Patent Grant
Semiconductor device with reduced terminal input capacitance
Patent number
6,934,204
Issue date
Aug 23, 2005
Renesas Technology Corp.
Takashi Itou
G11 - INFORMATION STORAGE
Information
Patent Grant
Semiconductor memory device having twin-cell units
Patent number
6,903,961
Issue date
Jun 7, 2005
Renesas Technology Corp.
Yasuhiko Tsukikawa
G11 - INFORMATION STORAGE
Information
Patent Grant
Semiconductor memory device with memory cells arranged in high density
Patent number
6,867,994
Issue date
Mar 15, 2005
Renesas Technology Corp.
Yasuhiko Tsukikawa
G11 - INFORMATION STORAGE
Information
Patent Grant
Semiconductor memory device with shortened connection length among...
Patent number
6,787,859
Issue date
Sep 7, 2004
Renesas Technology Corp.
Takashi Itou
G11 - INFORMATION STORAGE
Information
Patent Grant
Semiconductor memory circuit having normal operation mode and burn-...
Patent number
6,735,133
Issue date
May 11, 2004
Renesas Technology Corp.
Yasuhiko Tsukikawa
G11 - INFORMATION STORAGE
Information
Patent Grant
Configuration for generating a clock including a delay circuit and...
Patent number
6,727,738
Issue date
Apr 27, 2004
Renesas Technology Corp.
Yasuhiko Tsukikawa
G11 - INFORMATION STORAGE
Information
Patent Grant
Semiconductor memory device having nonvolatile memory cell of high...
Patent number
6,717,841
Issue date
Apr 6, 2004
Renesas Technology Corp.
Yasuhiko Tsukikawa
G11 - INFORMATION STORAGE
Information
Patent Grant
Multi-valued logical circuit with less latch-up
Patent number
6,700,406
Issue date
Mar 2, 2004
Mitsubishi Denki Kabushiki Kaisha
Yasuhiko Tsukikawa
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Grant
Semiconductor memory device capable of switching output data width
Patent number
6,687,174
Issue date
Feb 3, 2004
Renesas Technology Corp.
Yukiko Maruyama
G11 - INFORMATION STORAGE
Information
Patent Grant
Semiconductor memory device capable of switching output data width
Patent number
6,535,412
Issue date
Mar 18, 2003
Mitsubishi Denki Kabushiki Kaisha
Yukiko Maruyama
G11 - INFORMATION STORAGE
Information
Patent Grant
Semiconductor memory device capable of reducing power supply voltag...
Patent number
6,469,952
Issue date
Oct 22, 2002
Mitsubishi Denki Kabushiki Kaisha
Yasuhiko Tsukikawa
G11 - INFORMATION STORAGE
Information
Patent Grant
Semiconductor memory device with write driver reset function
Patent number
6,304,496
Issue date
Oct 16, 2001
Mitsubishi Denki Kabishiki Kaisha
Yasuhiko Tsukikawa
G11 - INFORMATION STORAGE
Information
Patent Grant
Semiconductor memory device provided with I/O clamp circuit
Patent number
6,285,602
Issue date
Sep 4, 2001
Mitsubishi Denki Kabushiki Kaisha
Susumu Tanida
G11 - INFORMATION STORAGE
Information
Patent Grant
Semiconductor memory device with test mode decision circuit
Patent number
6,269,038
Issue date
Jul 31, 2001
Mitsubishi Denki Kabushiki Kaisha
Takashi Itou
G11 - INFORMATION STORAGE
Information
Patent Grant
Data output circuit that can drive output data speedily and semicon...
Patent number
6,249,462
Issue date
Jun 19, 2001
Mitsubishi Denki Kabushiki Kaisha
Koji Tanaka
G11 - INFORMATION STORAGE
Information
Patent Grant
Semiconductor memory device having test mode
Patent number
6,201,748
Issue date
Mar 13, 2001
Mitsubishi Denki Kabushiki Kaisha
Yayoi Nakamura
G11 - INFORMATION STORAGE
Information
Patent Grant
Delay circuit having delay time free from influence of operation en...
Patent number
6,121,812
Issue date
Sep 19, 2000
Mitsubishi Denki Kabushiki Kaisha
Yasuhiko Tsukikawa
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Grant
Semiconductor memory device capable of executing earlier command op...
Patent number
6,061,285
Issue date
May 9, 2000
Mitsubishi Denki Kabushiki Kaisha
Yasuhiko Tsukikawa
G11 - INFORMATION STORAGE
Information
Patent Grant
Substrate potential generation circuit that can suppress variation...
Patent number
6,005,434
Issue date
Dec 21, 1999
Mitsubishi Denki Kabushiki Kaisha
Yasuhiko Tsukikawa
G05 - CONTROLLING REGULATING
Information
Patent Grant
Semiconductor memory device having test mode
Patent number
5,995,427
Issue date
Nov 30, 1999
Mitsubishi Denki Kabushiki Kaisha
Yasuhiko Tsukikawa
G11 - INFORMATION STORAGE
Information
Patent Grant
Semiconductor memory device permitting large output current from ou...
Patent number
5,982,705
Issue date
Nov 9, 1999
Mitsubishi Denki Kabushiki Kaisha
Yasuhiko Tsukikawa
G11 - INFORMATION STORAGE
Information
Patent Grant
Semiconductor memory device having storage capacity of 2.sup.2N+1 bits
Patent number
5,966,316
Issue date
Oct 12, 1999
Mitsubishi Denki Kabushiki Kaisha
Yasuhiko Tsukikawa
G11 - INFORMATION STORAGE
Information
Patent Grant
Semiconductor memory device clamping the overshoot and undershoot o...
Patent number
5,905,679
Issue date
May 18, 1999
Mitsubishi Denki Kabushiki Kaisha
Yasuhiko Tsukikawa
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Synchronous semiconductor device having circuitry capable of surely...
Patent number
5,905,690
Issue date
May 18, 1999
Mitsubishi Denki Kabushiki Kaisha
Mikio Sakurai
G01 - MEASURING TESTING
Patents Applications
last 30 patents
Information
Patent Application
CONTROL DEVICE, SEMICONDUCTOR MEMORY DEVICE AND CONTROL METHOD FOR...
Publication number
20200135261
Publication date
Apr 30, 2020
Zentel Japan Corporation
Masaru Haraguchi
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Application
SEMICONDUCTOR MEMORY DEVICE
Publication number
20190378561
Publication date
Dec 12, 2019
Zentel Japan Corporation
TAKASHI KUBO
G11 - INFORMATION STORAGE
Information
Patent Application
Semiconductor device and level conversion circuit
Publication number
20070103197
Publication date
May 10, 2007
Renesas Technology Corp.
Kyoji Yamasaki
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Application
Semiconductor memory device having dummy word line
Publication number
20050219893
Publication date
Oct 6, 2005
Renesas Technology Corp.
Yasuhiko Tsukikawa
G11 - INFORMATION STORAGE
Information
Patent Application
Semiconductor memory device driven with low voltage
Publication number
20050088881
Publication date
Apr 28, 2005
RENESAS TECHNOLOGY CORP.
Takeo Miki
G11 - INFORMATION STORAGE
Information
Patent Application
Semiconductor device and level conversion circuit
Publication number
20050068062
Publication date
Mar 31, 2005
RENESAS TECHNOLOGY CORP.
Kyoji Yamasaki
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Application
Semiconductor memory device with memory cells arranged in high density
Publication number
20040156255
Publication date
Aug 12, 2004
RENESAS TECHNOLOGY CORP.
Yasuhiko Tsukikawa
G11 - INFORMATION STORAGE
Information
Patent Application
Semiconductor memory device having twin-cell units
Publication number
20040141361
Publication date
Jul 22, 2004
RENESAS TECHNOLOGY CORP.
Yasuhiko Tsukikawa
G11 - INFORMATION STORAGE
Information
Patent Application
Semiconductor memory device
Publication number
20030193824
Publication date
Oct 16, 2003
Mitsubishi Denki Kabushiki Kaisha
Yasuhiko Tsukikawa
G11 - INFORMATION STORAGE
Information
Patent Application
Semiconductor memory device having nonvolatile memory cell of high...
Publication number
20030161177
Publication date
Aug 28, 2003
Mitsubishi Denki Kabushiki Kaisha
Yasuhiko Tsukikawa
G11 - INFORMATION STORAGE
Information
Patent Application
Semiconductor memory device capable of switching output data width
Publication number
20030103396
Publication date
Jun 5, 2003
Mitsubishi Denki Kabushiki Kaisha
Yukiko Maruyama
G11 - INFORMATION STORAGE
Information
Patent Application
Semiconductor device with reduced terminal input capacitance
Publication number
20030101374
Publication date
May 29, 2003
Mitsubishi Denki Kabushiki Kaisha
Takashi Itou
G01 - MEASURING TESTING
Information
Patent Application
Semiconductor memory device
Publication number
20030057500
Publication date
Mar 27, 2003
Mitsubishi Denki Kabushiki Kaisha
Takashi Itou
G11 - INFORMATION STORAGE
Information
Patent Application
Configuration for generating a clock including a delay circuit and...
Publication number
20020075047
Publication date
Jun 20, 2002
Mitsubishi Denki Kabushiki Kaisha
Yasuhiko Tsukikawa
G11 - INFORMATION STORAGE