Inventor

Yoshio Sakai

Inventor

Tokyo, JP

Overview

1977–2020

Patent span

Electricity

Primary field (CPC H)

Patents· 112 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

H10Bprimary

H10BElectronic memory devices14%

H10DInorganic electric semiconductor devices10%

Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests9%

B66BElevators8%

A61BDiagnosis6%

G11CStatic stores6%

G03FPhotomechanical production of textured or patterned surfaces, e.g. for printing, for processing of semiconductor devices4%

H05KPrinted circuits4%

H10WGeneric packages, interconnections, connectors or other constructional details of devices covered by class h104%

H04QSelecting4%

PatentTitleYear

10,527,937Liquid solder resist composition and covered-printed wiring board2020 10,317,796Solder resist composition and covered printed wiring board2019 10,261,414Liquid solder resist composition and printed wiring board2019 10,254,647Liquid solder resist composition and printed wiring board2019 10,234,758Liquid solder resist composition and covered-printed wiring board2019 10,151,976Solder resist composition, and covered-printed wiring board2018 9,835,944Liquid solder resist composition and covered-printed wiring board2017 9,808,184'Motor function evaluation device and motor function evaluation method'2017 9,766,115'Balance ability measurement apparatus, balance ability measurement method and non-transitory computer readable recording medium for recording balance ability measurement program'2017 9,512,490'Detection of digestive organ cancer, gastric cancer, colorectal cancer, pancreatic cancer, and biliary tract cancer by gene expression profiling'2016 9,512,491'Detection of digestive organ cancer, gastric cancer, colorectal cancer, pancreatic cancer, and biliary tract cancer by gene expression profiling'2016 9,458,284'Carboxyl-containing resin, resin composition for solder mask, and method of preparing carboxyl-containing resin'2016 9,450,680'Optical communication system, optical transmitter, and optical receiver'2016 9,441,276'Detection of digestive organ cancer, gastric cancer, colorectal cancer, pancreatic cancer, and biliary tract cancer by gene expression profiling'2016 9,317,424'Storage device and information processing system'2016 9,130,680'Optical transmitter and modulated optical signal generating method'2015 9,128,375'Resin composition for masks'2015 9,119,566'Present-on-bed determination apparatus and sleep measurement apparatus'2015 8,994,542'Biological signal processor'2015 8,932,990'Detection of digestive organ cancer, gastric cancer, colorectal cancer, pancreatic cancer, and biliary tract cancer by gene expression profiling'2015 8,929,371'Optical transmission device, scrambling method, and descrambling method'2015 8,904,096'Storage device and information processing system'2014 8,789,890'Abrasion detecting apparatus detecting abrasion of component of cutter head and tunnel boring machine including abrasion detecting apparatus'2014 8,585,615'Abdominal obesity index measuring apparatus'2013 8,554,982'Storage device and information processing system'2013 8,406,582'Optical switch and method for controlling optical switch'2013 8,331,402'Optical transmission device, scrambling method, and descrambling method'2012 7,920,791'Passive optical network system and method of data transmission in the passive optical network'2011 7,912,329'Optical-switch testing apparatus, optical-signal switching apparatus, optical-switch testing method, and control method for optical-signal switching'2011 7,813,795'Abdominal impedance measurement apparatus and body composition determination apparatus'2010 7,684,057'Linear measurement apparatus'2010 7,613,506'Method for deriving standard 12-lead electrocardiogram, and monitoring apparatus using the same'2009 7,596,453'Digital scale'2009 7,596,290'Optical-switch testing apparatus, optical-signal switching apparatus, optical-switch testing method, and control method for optical-signal switching'2009 7,594,896'Waist circumference calculation apparatus and body composition determination apparatus'2009 7,466,915'Mirror controller for optical switch'2008 7,440,649'Wavelength selective switch module'2008 7,385,863'Semiconductor memory device'2008 7,303,927'Three-dimensional ferroelectric capacitor and method for manufacturing thereof as well as semiconductor memory device'2007 7,277,606'Optical switch device'2007 7,248,514'Semiconductor memory device'2007 7,239,773'Optical-switch testing apparatus, optical-signal switching apparatus, optical-switch testing method, and control method for optical-signal switching'2007 7,077,415'Hand-driven vehicle'2006 6,878,586'Semiconductor memory device'2005 6,721,591'Method of deriving standard 12-lead electrocardiogram and electrocardiogram monitoring apparatus'2004 5,892,190'Method and system of controlling elevators and method and apparatus of inputting requests to the control system'1999 5,772,602'Noninvasive blood pressure measuring device and method'1998 5,699,807'Blood pressure measuring system'1997 5,700,705'Semiconductor integrated circuit device'1997 5,646,423'Semiconductor integrated circuit device'1997 5,619,055'Semiconductor integrated circuit device'1997 5,591,998'Semiconductor memory device'1997 5,584,299'Heart pulse wave detecting device using iterative base point detection'1996 5,583,358'Semiconductor memory device having stacked capacitors'1996 5,483,083'Semiconductor integrated circuit device'1996 5,409,085'Group control elevator system for automatically adjusting elevator operation based on a evaluation function'1995 5,389,749'Elevator system'1995 5,376,104'Defibrillator with electrocardiogram monitor'1994 5,374,576'Method of fabricating stacked capacitor cell memory devices'1994 5,346,977'Method of applying a skin-protective composition'1994 5,307,903'Method and system of controlling elevators and method and apparatus of inputting requests to the control system'1994 5,258,586'Elevator control system with image pickups in hall waiting areas and elevator cars'1993 5,237,528'Semiconductor memory'1993 5,229,435'Skin-protecting composition'1993 5,214,496'Semiconductor memory'1993 5,194,749'Semiconductor integrated circuit device'1993 5,187,870'Gyro compass'1993 5,182,776'Image processing apparatus having apparatus for correcting the image processing'1993 5,155,671'Power converter with current-type inverter'1992 5,140,389'Semiconductor memory device having stacked capacitor cells'1992 5,135,097'People mover apparatus'1992 5,132,771'Semiconductor memory device having flip-flop circuits'1992 5,042,620'Elevator control system'1991 5,034,797'Semiconductor memory devices having stacked polycrystalline silicon transistors'1991 5,028,975'Semiconductor devices and a process for producing the same'1991 5,025,896'Elevator control apparatus'1991 4,995,479'Display guide apparatus of elevator and its display method'1991 4,982,815'Elevator apparatus'1991 4,970,564'Semiconductor memory device having stacked capacitor cells'1990 4,955,253'Self-locking knob for adjustable control mechanism'1990 4,907,058'Complementary semiconductor device having a double well'1990 4,901,128'Semiconductor memory'1990 4,884,182'Current source power converting apparatus with overvoltage protection'1989 4,853,894'Static random-access memory having multilevel conductive layer'1989 4,852,694'Elevator starting compensation method and apparatus'1989 4,849,801'Semiconductor memory device having increased capacitance for the storing nodes of the memory cells'1989 4,805,147'Stacked static random access memory cell having capacitor'1989 4,797,717'Semiconductor memory device'1989 4,792,841'Semiconductor devices and a process for producing the same'1988 4,785,342'Static random access memory having structure of first-, second- and third-level conductive films'1988 4,779,709'Apparatus for controlling AC elevators'1988 4,768,076'Recrystallized CMOS with different crystal planes'1988 4,756,389'Apparatus for detecting a position of a cage in a hydraulic elevator'1988 4,707,718'Read-only memory'1987 4,629,034'Elevator control apparatus'1986 4,609,835'Semiconductor integrated circuit'1986 4,584,636'AC-to-DC power converter with improved power factor and overvoltage suppression'1986 4,574,186'Heating sheet'1986 4,549,340'Method of making CMOS semiconductor device using specially positioned, retained masks, and product formed thereby'1985 4,492,974'DMOS With gate protection diode formed over base region'1985 4,455,495'Programmable semiconductor integrated circuitry including a programming semiconductor element'1984 4,436,581'Uniform etching of silicon (doped and undoped) utilizing ions'1984 4,429,215'Planar heat generator'1984 4,419,684'Semiconductor integrated circuit'1983 4,377,819'Semiconductor device'1983 4,361,866'Power converter apparatus'1982 4,355,374'Semiconductor memory device'1982 4,261,004'Semiconductor device'1981 4,256,204'Safety apparatus for elevator system'1981 4,199,778'Interconnection structure for semiconductor integrated circuits'1980 4,171,505'Fault detecting system for a control system'1979 4,031,439'Over-speed preventing apparatus for DC motor'1977

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1977–1999Patents assigned to HITACHI LTD (57)· patent assignee history

1980–1987Based in Hachioji, JP· patent location history

1981–1999Based in Ibaraki, JP· patent location history

1989–2008Based in Kanagawa, JP· patent location history

1994–2017Based in Tokyo, JP· patent location history

2007–2015Patents assigned to FUJITSU LTD (11)· patent assignee history

2007–2016Based in Kawasaki, JP· patent location history

2009–2017Patents assigned to TANITA SEISAKUSHO KK (9)· patent assignee history

2012–2015Patents assigned to SAKAI YOSHIO (7)· patent assignee history

2015–2020Patents assigned to GOO CHEMICAL CO LTD (9)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
HITACHI LTD	57	1977–1999
FUJITSU LTD	11	2007–2015
GOO CHEMICAL CO LTD	9	2015–2020
TANITA SEISAKUSHO KK	9	2009–2017
SAKAI YOSHIOself	7	2012–2015

Locations

Location	Patents	Span
Tokyo, JP	12	1994–2017
Kawasaki, JP	12	2007–2016
Ibaraki, JP	12	1981–1999
Kanagawa, JP	10	1989–2008
Hachioji, JP	10	1980–1987