Atsushi Ohba

Person

Tokyo, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Semiconductor memory device
- Patent number 7,427,031
- Issue date Sep 23, 2008
- Renesas Technology Corp.
- Norihiko Hakushi
- G11 - INFORMATION STORAGE
Information Patent Grant
Semiconductor memory device
- Patent number 7,000,846
- Issue date Feb 21, 2006
- Renesas Technology Corp.
- Norihiko Hakushi
- G11 - INFORMATION STORAGE
Information Patent Grant
Semiconductor memory preventing unauthorized copying
- Patent number 6,996,006
- Issue date Feb 7, 2006
- Renesas Technology Corp.
- Shinichi Ishimoto
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Nonvolatile semiconductor memory device that can suppress effect of...
- Patent number 6,870,771
- Issue date Mar 22, 2005
- Renesas Technology Corp.
- Mitsuhiro Tomoeda
- G11 - INFORMATION STORAGE
Information Patent Grant
Non-volatile semiconductor memory device having sensitive sense amp...
- Patent number 6,611,468
- Issue date Aug 26, 2003
- Mitsubishi Denki Kabushiki Kaisha
- Isao Nojiri
- G11 - INFORMATION STORAGE
Information Patent Grant
Nonvolatile semiconductor memory device and method of erasing data...
- Patent number 6,567,316
- Issue date May 20, 2003
- Mitsubishi Denki Kabushiki Kaisha
- Atsushi Ohba
- G11 - INFORMATION STORAGE
Information Patent Grant
Nonvolatile semiconductor memory device having reduced erase time a...
- Patent number 6,515,908
- Issue date Feb 4, 2003
- Mitsubishi Denki Kabushiki Kaisha
- Yoshikazu Miyawaki
- G11 - INFORMATION STORAGE
Information Patent Grant
Non-volatile semiconductor memory device improved sense amplificati...
- Patent number 6,504,761
- Issue date Jan 7, 2003
- Mitsubishi Denki Kabushiki Kaisha
- Yoshihide Kai
- G11 - INFORMATION STORAGE
Information Patent Grant
SEMICONDUCTOR MEMORY DEVICE WHICH CAN BE SIMULTANEOUSLY TESTED EVEN...
- Patent number 6,473,345
- Issue date Oct 29, 2002
- Mitsubishi Denki Kabushiki Kaisha
- Takashi Hayasaka
- G11 - INFORMATION STORAGE
Information Patent Grant
Signal amplification circuit for amplifying and sensing current dif...
- Patent number 6,473,343
- Issue date Oct 29, 2002
- Mitsubishi Denki Kabushiki Kaisha
- Atsushi Ohba
- G11 - INFORMATION STORAGE
Information Patent Grant
CMOS switch circuit for transferring high voltages, in particular f...
- Patent number 6,433,583
- Issue date Aug 13, 2002
- STMicroelectronics S.r.l.
- Rino Micheloni
- G11 - INFORMATION STORAGE
Information Patent Grant
Row decoder for a nonvolatile memory with capability of selectively...
- Patent number 6,356,481
- Issue date Mar 12, 2002
- STMicroelectronics S.r.l.
- Rino Micheloni
- G11 - INFORMATION STORAGE
Information Patent Grant
Nonvolatile semiconductor memory device and method of erasing data...
- Patent number 6,330,192
- Issue date Dec 11, 2001
- Mitsubishi Denki Kabushiki Kaisha
- Atsushi Ohba
- G11 - INFORMATION STORAGE
Information Patent Grant
Non-volatile semiconductor memory device and method of manufacturin...
- Patent number 6,144,584
- Issue date Nov 7, 2000
- Mitsubishi Denki Kabushiki Kaisha
- Yuichi Kunori
- G11 - INFORMATION STORAGE
Information Patent Grant
Semiconductor device allowing generation of desired internal voltag...
- Patent number 6,069,518
- Issue date May 30, 2000
- Mitsubishi Denki Kabushiki Kaisha
- Hiroaki Nakai
- G11 - INFORMATION STORAGE
Information Patent Grant
Semiconductor memory device and method for reading and writing data...
- Patent number RE36655
- Issue date Apr 11, 2000
- Mitsubishi Denki Kabushiki Kaisha
- Kunihiko Kozaru
- 365 - Static information storage and retrieval
Information Patent Grant
Internal potential generation circuit that can output a plurality o...
- Patent number 5,999,475
- Issue date Dec 7, 1999
- Mitsubishi Denki Kabushiki Kaisha
- Tomoshi Futatsuya
- G11 - INFORMATION STORAGE
Information Patent Grant
Semiconductor memory device having data protection feature
- Patent number 5,991,197
- Issue date Nov 23, 1999
- Mitsubishi Denki Kabushiki Kaisha
- Taku Ogura
- G11 - INFORMATION STORAGE
Information Patent Grant
Semiconductor memory device having a defect relief arrangement
- Patent number 5,808,944
- Issue date Sep 15, 1998
- Hitachi, Ltd.
- Takayuki Yoshitake
- G11 - INFORMATION STORAGE
Information Patent Grant
Nonvolatile semiconductor memory device having a memory cell transi...
- Patent number 5,554,867
- Issue date Sep 10, 1996
- Mitsubishi Denki Kabushiki Kaisha
- Natsuo Ajika
- G11 - INFORMATION STORAGE
Information Patent Grant
Semiconductor memory device and method for reading and writing data...
- Patent number 5,539,691
- Issue date Jul 23, 1996
- Mitsubishi Denki Kabushiki Kaisha
- Kunihiko Kozaru
- G11 - INFORMATION STORAGE
Information Patent Grant
Non-volatile semiconductor memory device allowing fast verifying op...
- Patent number 5,521,864
- Issue date May 28, 1996
- Mitsubishi Denki Kabushiki Kaisha
- Shinichi Kobayashi
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Low power BiMOS amplifier and ECL-CMOS level converter
- Patent number 5,371,421
- Issue date Dec 6, 1994
- Mitsubishi Denki Kabushiki Kaisha
- Harufusa Kondoh
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Semiconductor memory device reading/writing data of multiple bits i...
- Patent number 5,369,619
- Issue date Nov 29, 1994
- Mitsubishi Denki Kabushiki Kaisha
- Atsushi Ohba
- G11 - INFORMATION STORAGE
Information Patent Grant
Level converter with delay circuitry used to increase switching speed
- Patent number 5,317,213
- Issue date May 31, 1994
- Mitsubishi Denki Kabushiki Kaisha
- Hirotoshi Sato
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Semiconductor memory device capable of driving divided word lines a...
- Patent number 5,274,597
- Issue date Dec 28, 1993
- Mitsubishi Denki Kabushiki Kaisha
- Shigeki Ohbayashi
- G11 - INFORMATION STORAGE
Information Patent Grant
Symmetrical differential amplifier circuit
- Patent number 5,248,946
- Issue date Sep 28, 1993
- Mitsubishi Denki Kabushiki Kaisha
- Shuji Murakami
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Semiconductor memory device with readout data buses connecting loca...
- Patent number 5,239,507
- Issue date Aug 24, 1993
- Mitsubishi Denki Kabushiki Kaisha
- Atsushi Ohba
- G11 - INFORMATION STORAGE
Information Patent Grant
Semiconductor integrated circuit with circuits for generating stabl...
- Patent number 5,223,744
- Issue date Jun 29, 1993
- Mitsubishi Denki Kabushiki Kaisha
- Shigeki Ohbayashi
- G05 - CONTROLLING REGULATING
Information Patent Grant
Semiconductor memory device operable with power supply voltage vari...
- Patent number 5,222,045
- Issue date Jun 22, 1993
- Mitsubishi Denki Kabushiki Kaisha
- Shigeki Ohbayashi
- G11 - INFORMATION STORAGE

Patents Applicationslast 30 patents

Information Patent Application
Semiconductor memory device
- Publication number 20060065746
- Publication date Mar 30, 2006
- Renesas Technology Corp.
- Norihiko Hakushi
- G11 - INFORMATION STORAGE
Information Patent Application
Semiconductor memory preventing unauthorized copying
- Publication number 20040264262
- Publication date Dec 30, 2004
- RENESAS TECHNOLOGY CORP.
- Shinichi Ishimoto
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
Semiconductor memory device
- Publication number 20040148457
- Publication date Jul 29, 2004
- Norihiko Hakushi
- G11 - INFORMATION STORAGE
Information Patent Application
Nonvolatile semiconductor memory device that can suppress effect of...
- Publication number 20030043629
- Publication date Mar 6, 2003
- Mitsubishi Denki Kabushiki Kaisha
- Mitsuhiro Tomoeda
- G11 - INFORMATION STORAGE
Information Patent Application
Signal amplification circuit for amplifying and sensing current dif...
- Publication number 20020118576
- Publication date Aug 29, 2002
- Mitsubishi Denki Kabushiki Kaisha
- Atsushi Ohba
- G11 - INFORMATION STORAGE
Information Patent Application
Non-volatile semiconductor memory device having improved sense ampl...
- Publication number 20020110021
- Publication date Aug 15, 2002
- Mitsubishi Denki Kabushiki Kaisha
- Yoshihide Kai
- G11 - INFORMATION STORAGE
Information Patent Application
Non-volatile semiconductor memory device having sensitive sense amp...
- Publication number 20020101775
- Publication date Aug 1, 2002
- Mitsubishi Denki Kabushiki Kaisha
- Isao Nojiri
- G11 - INFORMATION STORAGE
Information Patent Application
Semiconductor memory device which can be simultaneously tested even...
- Publication number 20020097611
- Publication date Jul 25, 2002
- Mitsubishi Denki Kabushiki Kaisha
- Takashi Hayasaka
- G11 - INFORMATION STORAGE
Information Patent Application
Nonvolatile semiconductor memory device having reduced erase time a...
- Publication number 20020057599
- Publication date May 16, 2002
- Mitsubishi Denki Kabushiki Kaisha
- Yoshikazu Miyawaki
- G11 - INFORMATION STORAGE

Atsushi Ohba

Person

Patents Grantslast 30 patents

Semiconductor memory device

Semiconductor memory device

Semiconductor memory preventing unauthorized copying

Nonvolatile semiconductor memory device that can suppress effect of...

Non-volatile semiconductor memory device having sensitive sense amp...

Nonvolatile semiconductor memory device and method of erasing data...

Nonvolatile semiconductor memory device having reduced erase time a...

Non-volatile semiconductor memory device improved sense amplificati...

SEMICONDUCTOR MEMORY DEVICE WHICH CAN BE SIMULTANEOUSLY TESTED EVEN...

Signal amplification circuit for amplifying and sensing current dif...

CMOS switch circuit for transferring high voltages, in particular f...

Row decoder for a nonvolatile memory with capability of selectively...

Nonvolatile semiconductor memory device and method of erasing data...

Non-volatile semiconductor memory device and method of manufacturin...

Semiconductor device allowing generation of desired internal voltag...

Semiconductor memory device and method for reading and writing data...

Internal potential generation circuit that can output a plurality o...

Semiconductor memory device having data protection feature

Semiconductor memory device having a defect relief arrangement

Nonvolatile semiconductor memory device having a memory cell transi...

Semiconductor memory device and method for reading and writing data...

Non-volatile semiconductor memory device allowing fast verifying op...

Low power BiMOS amplifier and ECL-CMOS level converter

Semiconductor memory device reading/writing data of multiple bits i...

Level converter with delay circuitry used to increase switching speed

Semiconductor memory device capable of driving divided word lines a...

Symmetrical differential amplifier circuit

Semiconductor memory device with readout data buses connecting loca...

Semiconductor integrated circuit with circuits for generating stabl...

Semiconductor memory device operable with power supply voltage vari...

Patents Applicationslast 30 patents

Semiconductor memory device

Semiconductor memory preventing unauthorized copying

Semiconductor memory device

Nonvolatile semiconductor memory device that can suppress effect of...

Signal amplification circuit for amplifying and sensing current dif...

Non-volatile semiconductor memory device having improved sense ampl...

Non-volatile semiconductor memory device having sensitive sense amp...

Semiconductor memory device which can be simultaneously tested even...

Nonvolatile semiconductor memory device having reduced erase time a...