SA

Shigeru Atsumi

KT Kabushiki Kaisha Toshiba: 123 patents #51 of 21,451Top 1%
TO Toshiba: 1 patents #1,121 of 2,688Top 45%
SO Sony: 1 patents #17,262 of 25,231Top 70%
Overall (All Time): #9,017 of 4,157,543Top 1%
126
Patents All Time

Issued Patents All Time

Showing 101–125 of 126 patents

Patent #TitleCo-InventorsDate
5233566 Address detector of a redundancy memory cell Keniti Imamiya, Sumio Tanaka 1993-08-03
5229963 Semiconductor nonvolatile memory device for controlling the potentials on bit lines Nobuaki Ohtsuka, Sumio Tanaka, Junichi Miyamoto 1993-07-20
5181092 Input protection resistor used in input protection circuit — 1993-01-19
5105385 Cell array pattern layout for EEPROM device Nobuaki Ohtsuka, Sumio Tanaka, Junichi Miyamoto 1992-04-14
5046048 Semiconductor integrated circuit including output buffer Sumio Tanaka, Junichi Miyamoto, Nobuaki Ohtsuka, Keniti Imamiya 1991-09-03
5016077 Insulated gate type semiconductor device and method of manufacturing the same Masaki Sato 1991-05-14
4999813 Nonvolatile semiconductor memory having a stress test circuit Nobuaki Ohtsuka, Junichi Miyamoto 1991-03-12
4970691 2-cell/1-bit type EPROM Sumio Tanaka, Junichi Miyamoto 1990-11-13
4956816 Non-volatile semiconductor memory having improved testing circuitry Sumio Tanaka, Shinji Saito, Nobuaki Otsuka 1990-09-11
4951257 Reference setting circuit for determining written-in content in nonvolatile semiconductor memories Keniti Imamiya, Sumio Tanaka, Junichi Miyamoto, Yumiko Iyama, Nobuaki Ohtsuka 1990-08-21
4943962 Nonvolatile semiconductor memory having page mode programming function Keniti Imamiya, Sumio Tanaka, Junichi Miyamoto, Nobuaki Ohtsuka, Shinji Saito 1990-07-24
4926070 Voltage level converting circuit Sumio Tanaka 1990-05-15
4924339 Input protecting circuit in use with a MOS semiconductor device Toru Yoshida, Yasuo Kawahara, Fuminari Tanaka 1990-05-08
4916665 Semiconductor memory device with P-channel MOS transistor load circuit Sumio Tanaka 1990-04-10
4912534 Nonvolatile semiconductor memory device Sumio Tanaka, Kenji Shibata, Koichi Kanzaki 1990-03-27
4897815 High-speed write type nonvolatile semiconductor memory Sumio Tanaka, Shinji Saito, Nobuaki Ohtsuka 1990-01-30
4893275 High voltage switching circuit in a nonvolatile memory Sumio Tanaka, Nobuaki Ohtsuka, Keniti Imamiya 1990-01-09
4884241 Nonvolatile semiconductor memory device Sumio Tanaka, Shinji Saito 1989-11-28
4879689 Nonvolatile semiconductor memory device Sumio Tanaka, Shinji Saito, Nobauki Otsuka 1989-11-07
4860260 Semiconductor memory device with testing of redundant memory cells Shinji Saito, Sumio Tanaka 1989-08-22
4843594 Nonvolatile semiconductor memory device with a bias circuit Sumio Tanaka 1989-06-27
4825271 Nonvolatile semiconductor memory Sumio Tanaka, Masaki Sato, Shinji Saito, Nobuaki Ohtsuka 1989-04-25
4788663 Nonvolatile semiconductor memory device with a lightly-doped drain structure Sumio Tanaka, Shinji Saito, Nobuaki Ohtsuka 1988-11-29
4694429 Semiconductor memory device Sumio Tanaka, Shinji Saito, Nobuaki Ohtsuka 1987-09-15
4692902 Semiconductor read only memory device with improved access time Sumio Tanaka, Shinji Saito 1987-09-08