Inventor
KUMAGAI MASAO
JP21 patents
⚠️ This page may combine multiple inventors who share the name “KUMAGAI MASAO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
FUJITSU LTD
9 patentsUS7268763B2Sep 11, 2007
Method for driving display and drive circuit for display
FUJITSU LTD24 citations91
US6847346B2Jan 25, 2005
Semiconductor device equipped with transfer circuit for cascade connection
FUJITSU LTD19 citations84
US4883975ANov 28, 1989
Schmitt trigger circuit
FUJITSU LTD9 citations67
US7079104B2Jul 18, 2006
Semiconductor device and liquid crystal panel display driver
FUJITSU LTD2 citations62
US7180512B2Feb 20, 2007
Integrated circuit free from accumulation of duty ratio errors
FUJITSU LTD2 citations61
US4774620ASep 27, 1988
Logic circuit
FUJITSU LTD4 citations61
US4703202AOct 27, 1987
Two-stage gate circuit providing inverted and non-inverted outputs
FUJITSU LTD5 citations61
US7098878B2Aug 29, 2006
Semiconductor device and liquid crystal panel driver device
FUJITSU LTD4 citations60
US7215312B2May 8, 2007
Semiconductor device, display device, and signal transmission system
FUJITSU LTD1 citations52
ALPS ELECTRIC CO LTD
4 patentsUS4383153AMay 10, 1983
Locking type push-button switch
ALPS ELECTRIC CO LTD9 citations73
US4259559AMar 31, 1981
Illuminated push-button electrical switch assembly
ALPS ELECTRIC CO LTD11 citations73
US4835642AMay 30, 1989
Magnetic head assembly for double-sided disk drive apparatus
ALPS ELECTRIC CO LTD12 citations69
US4764830AAug 16, 1988
Magnetic head assembly in floppy disk drive
ALPS ELECTRIC CO LTD4 citations63