Inventor

NAGASAWA KOUICHI

JP16 patents

⚠️ This page may combine multiple inventors who share the name “NAGASAWA KOUICHI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

HITACHI LTD

15 patents

US5005068AApr 2, 1991

Method of making CMOS semiconductor device using specially positioned, retained masks, and product formed thereby

HITACHI LTD21 citations82

US4110899ASep 5, 1978

Method for manufacturing complementary insulated gate field effect transistors

HITACHI LTD30 citations82

US4626450ADec 2, 1986

Process for producing semiconductor devices

HITACHI LTD19 citations80

US5122857AJun 16, 1992

Semiconductor memory device having first and second selecting lines for accessing memory cells

HITACHI LTD10 citations74

US5028975AJul 2, 1991

Semiconductor devices and a process for producing the same

HITACHI LTD7 citations74

US4990998AFeb 5, 1991

Semiconductor device to prevent out-diffusion of impurities from one conductor layer to another

HITACHI LTD11 citations74

US4792841ADec 20, 1988

Semiconductor devices and a process for producing the same

HITACHI LTD15 citations74

US4637124AJan 20, 1987

Process for fabricating semiconductor integrated circuit device

HITACHI LTD20 citations74

US4912674AMar 27, 1990

Read-only memory

HITACHI LTD15 citations73

US5055420AOct 8, 1991

Process for fabricating semiconductor integrated circuit devices

HITACHI LTD3 citations63

MITSUBISHI ELECTRIC CORP

1 patent

US4243897AJan 6, 1981

Charge coupled semiconductor device storing 2-bit information

MITSUBISHI ELECTRIC CORP1 citations52

NAGASAWA KOUICHI

HITACHI LTD

Semiconductor memory device

Semiconductor memory cell device with thick insulative layer

Read-only memory

Semiconductor device sram to prevent out-diffusion

Fabricating semiconductor devices to prevent alloy spiking

Method of making CMOS semiconductor device using specially positioned, retained masks, and product formed thereby

Method for manufacturing complementary insulated gate field effect transistors

Process for producing semiconductor devices

Semiconductor memory device having first and second selecting lines for accessing memory cells

Semiconductor devices and a process for producing the same

Semiconductor device to prevent out-diffusion of impurities from one conductor layer to another

Semiconductor devices and a process for producing the same

Process for fabricating semiconductor integrated circuit device

Read-only memory

Process for fabricating semiconductor integrated circuit devices

MITSUBISHI ELECTRIC CORP

Charge coupled semiconductor device storing 2-bit information