Inventor

YOSHIFUKU RYOICHI

JP4 patents

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

RENESAS TECH CORP

2 patents

US6740598B2May 25, 2004

Wiring layer dry etching method and semiconductor device manufacturing method

RENESAS TECH CORP4 citations58

US6825118B2Nov 30, 2004

Method of manufacturing semiconductor device having trench element-isolating structure

RENESAS TECH CORP0 citations49

MITSUBISHI ELECTRIC CORP

1 patent

US6651678B2Nov 25, 2003

Method of manufacturing semiconductor device

MITSUBISHI ELECTRIC CORP6 citations60

RENESAS ELECTRONICS CORP

1 patent

US7989283B2Aug 2, 2011

Manufacturing method of semiconductor device

RENESAS ELECTRONICS CORP2 citations57