Inventor
TAMAKI YOICHI
JP32 patents
⚠️ This page may combine multiple inventors who share the name “TAMAKI YOICHI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HITACHI LTD
27 patentsUS5793097AAug 11, 1998
Semiconductor device having conducting structure
HITACHI LTD30 citations96
US4635090AJan 6, 1987
Tapered groove IC isolation
HITACHI LTD49 citations96
US4949162AAug 14, 1990
Semiconductor integrated circuit with dummy pedestals
HITACHI LTD91 citations95
US4396460AAug 2, 1983
Method of forming groove isolation in a semiconductor device
HITACHI LTD34 citations93
US5846869ADec 8, 1998
Method of manufacturing semiconductor integrated circuit device
HITACHI LTD36 citations92
US5773340AJun 30, 1998
Method of manufacturing a BIMIS
HITACHI LTD26 citations92
US5011788AApr 30, 1991
Process of manufacturing semiconductor integrated circuit device and product formed thereby
HITACHI LTD22 citations92
US4746963AMay 24, 1988
Isolation regions formed by locos followed with groove etch and refill
HITACHI LTD33 citations92
US4729965AMar 8, 1988
Method of forming extrinsic base by diffusion from polysilicon/silicide source and emitter by lithography
HITACHI LTD39 citations92
US7576406B2Aug 18, 2009
Semiconductor device
HITACHI LTD19 citations82
US5141888AAug 25, 1992
Process of manufacturing semiconductor integrated circuit device having trench and field isolation regions
HITACHI LTD15 citations82
US4984048AJan 8, 1991
Semiconductor device with buried side contact
HITACHI LTD20 citations82
US4819054AApr 4, 1989
Semiconductor IC with dual groove isolation
HITACHI LTD18 citations82
US6835632B2Dec 28, 2004
Semiconductor device and process of producing the same
HITACHI LTD6 citations74
US6610569B1Aug 26, 2003
Semiconductor device and process of producing the same
HITACHI LTD5 citations74
US6573578B2Jun 3, 2003
Photo semiconductor integrated circuit device and optical recording reproducing apparatus
HITACHI LTD8 citations74
US6133094AOct 17, 2000
Semiconductor device and process of producing the same
HITACHI LTD7 citations74
US5643805AJul 1, 1997
Process for producing a bipolar device
HITACHI LTD13 citations74
US5619069AApr 8, 1997
Bipolar device and production thereof
HITACHI LTD6 citations74
US5200348AApr 6, 1993
Method of manufacturing semiconductor device with constant width deep groove isolation
HITACHI LTD8 citations74
US5128743AJul 7, 1992
Semiconductor device and method of manufacturing the same
HITACHI LTD13 citations74
US4905078AFeb 27, 1990
Semiconductor device
HITACHI LTD10 citations74
US4853343AAug 1, 1989
Method for fabricating a semiconductor integrated circuit device having thick oxide films and groove etch and refill
HITACHI LTD8 citations74
US5324983AJun 28, 1994
Semiconductor device
HITACHI LTD10 citations73
US6876067B2Apr 5, 2005
Semiconductor device
HITACHI LTD9 citations72
US6662344B2Dec 9, 2003
Semiconductor device and method for fabricating the same
HITACHI LTD7 citations72
US6524924B1Feb 25, 2003
Semiconductor device and process of producing the same
HITACHI LTD2 citations63