Inventor
NAKAGAWA KIYOKAZU
JP17 patents
⚠️ This page may combine multiple inventors who share the name “NAKAGAWA KIYOKAZU”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HITACHI LTD
11 patentsUS5523592AJun 4, 1996
Semiconductor optical device, manufacturing method for the same, and opto-electronic integrated circuit using the same
HITACHI LTD145 citations99
US5241197AAug 31, 1993
Transistor provided with strained germanium layer
HITACHI LTD188 citations98
US5416331AMay 16, 1995
Surface atom fabrication method and apparatus
HITACHI LTD69 citations96
US6545294B1Apr 8, 2003
Electronic apparatus having semiconductor device including plurality of transistors formed on a polycrystalline layered structure in which the number of crystal grains in each polycrystalline layer is gradually reduced from lower to upper layer
HITACHI LTD17 citations92
US5689494ANov 18, 1997
Surface atom fabrication method and apparatus
HITACHI LTD22 citations92
US6903372B1Jun 7, 2005
Semiconductor device, method of making the same and liquid crystal display device
HITACHI LTD23 citations91
US5338942AAug 16, 1994
Semiconductor projections having layers with different lattice constants
HITACHI LTD14 citations74
US6529304B1Mar 4, 2003
Optical communication equipment and system
HITACHI LTD8 citations72
US6888162B2May 3, 2005
Electronic apparatus having polycrystalline semiconductor thin film structure
HITACHI LTD3 citations63
US6727514B2Apr 27, 2004
Thin-film semiconductor integrated circuit device and picture display device with using thereof and manufacturing method thereof
HITACHI LTD4 citations63
US7317207B2Jan 8, 2008
Semiconductor device, method of making the same and liquid crystal display device
HITACHI LTD4 citations61