Inventor · Itami, JP

Seiji Sawada

49Patents
18h-index
54Co-inventors
84Inventor score

Filing activity: Apr 21, 1993 → Jun 4, 2019

Most-cited inventions

PatentTitleAreaCited byStatus
US5404338A Synchronous type semiconductor memory device operating in synchronization with an external clock signal Mechanical Engineering; Lighting; Heating 165 Expired
US5815462A Synchronous semiconductor memory device and synchronous memory module Physics 121 Expired
US5814685A Ink jet recording liquid Emerging Cross-Sectional Technologies 113 Expired
US5471430A Test circuit for refresh counter of clock synchronous type semiconductor memory device Physics 76 Expired
US5587950A Test circuit in clock synchronous semiconductor memory device Physics 61 Expired
US5772746A Ink jet recording liquid Chemistry; Metallurgy 60 Expired
US5511029A Test circuit in clock synchronous semiconductor memory device Physics 58 Expired
US5748560A Synchronous semiconductor memory device with auto precharge operation easily controlled Physics 56 Expired
US5517462A Synchronous type semiconductor memory device operating in synchronization with an external clock signal Mechanical Engineering; Lighting; Heating 53 Expired
US6426900B1 Synchronous semiconductor memory device performing data output in synchronization with external clock Electricity 39 Expired
US5716435A Recording fluid for ink-jet printing and process for the production thereof Chemistry; Metallurgy 37 Expired
US5903514A Multi-bank synchronous semiconductor memory device Physics 36 Expired
US5808961A Internal clock generating circuit for clock synchronous type semiconductor memory device Physics 32 Expired
US5365481A Semiconductor memory device having test mode and method of setting test mode Physics 29 Expired
US5972087A Water-based ink-jet recording fluid Chemistry; Metallurgy 28 Expired
US6031024A Inkjet recording liquid and process for the production thereof Chemistry; Metallurgy 26 Expired
US6894945B2 Clock synchronous semiconductor memory device Physics 25 Expired
US5703831A Synchronous semiconductor memory device having internal circuitry enabled only when commands are applied in normal sequence Physics 20 Expired
US5691661A Pulse generating circuit and a semiconductor memory device provided with the same Electricity 18 Expired
US7035366B2 Delay locked loop circuit and its control method Electricity 15 Expired
US6002615A Clock shift circuit and synchronous semiconductor memory device using the same Physics 14 Expired
US6014340A Synchronous semiconductor memory device having internal circuitry enabled only when commands are applied in normal sequence Physics 13 Expired
US5465063A Pulse generating circuit with temperature compensation Electricity 12 Expired
US6049488A Clock synchronous semiconductor memory device capable of preventing outputting of invalid data Physics 12 Expired
US5818768A Operation mode setting circuit in semiconductor device Physics 10 Expired

Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.