Inventor

Eiichi Sasaki

Inventor

Sagamihara, JP

Overview

1987–2021

Patent span

Performing operations

Primary field (CPC B)

Patents· 38 as inventor

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

B41Jprimary

B41JTypewriters29%

H04NPictorial communication, e.g. television27%

G03GElectrography20%

B66BElevators6%

H01RElectrically-conductive connections4%

B41MPrinting, duplicating, marking, or copying processes2%

F16KValves2%

G01HMeasurement of mechanical vibrations or ultrasonic, sonic or infrasonic waves2%

G01MTesting static or dynamic balance of machines or structures2%

G06KGraphical data reading2%

PatentTitleYear

10,992,942Coding method, decoding method, and coding device2021 9,964,434Electret type vibration detection system, method of creating external vibration information, method of creating transfer function information regarding external vibration, program for creating external vibration information, and program for creating transfer function information regarding external vibration2018 8,210,881'Electrical connector'2012 8,118,609'Electrical connector'2012 7,292,374'Method and apparatus for image processing capable of efficiently performing a gray-scale correction'2007 6,804,031'Method and apparatus for image processing capable of efficiently performing a gray-scale correction'2004 6,486,973'Image forming apparatus and method for correcting density level of pixel data corresponding to each dot in a dot image'2002 6,184,910'Color image forming apparatus with polygonal mirror rotation phase control'2001 6,118,557'Color image forming apparatus'2000 6,014,499'Image forming apparatus which forms an image by dot images'2000 5,899,597'Toner cartridge with an external reflector for a developer apparatus capable of optically end-detecting'1999 5,821,970'Color image forming apparatus'1998 5,822,077'Determination unit for determining, through detecting information associated with external object, whether or not external object will use functional apparatus or who is external object, so as to provide appropriate service'1998 5,805,192'Image forming apparatus having automatic image density adjustment function against dot size variation'1998 5,737,665'Apparatus for calibrating toner density for color images'1998 5,671,465'Image forming apparatus having a revolver type developing device'1997 5,621,221'Toner end detection device and method'1997 5,608,770'Frequency converter outputting a clock signal having a stable and accurate frequency'1997 5,515,145'Color image forming apparatus having integral multiple length belt'1996 5,499,092'Method and a color image forming apparatus forming a positioning mark'1996 5,440,373'Color image forming apparatus'1995 5,324,121'Recording density correcting device based on glaze layer thickness of thermal head'1994 5,285,027'Hydraulic elevator and a control method thereof'1994 5,115,252'Thermal head drive apparatus correcting for the influence on a printing element of heat from other printing elements'1992 5,109,235'Recording density correcting apparatus'1992 5,086,306'Line head driving apparatus'1992 5,079,564'Recording apparatus using a time varying distribution of heat element driving pulses'1992 5,012,258'Density controlled thermal print head'1991 4,983,994'Thermal transfer type printing device'1991 4,973,984'Thermal-head driving apparatus'1990 4,909,279'Fluid control valve'1990 4,890,120'Thermal transfer type printing device capable of selecting ink sheets'1989 4,873,535'Method of driving thermal head'1989 4,816,843'Method of controlling a thermal head'1989 4,779,102'Head drive system for a thermal printer'1988 4,715,478'Hydraulic elevator'1987 4,675,697'Thermal head driving device'1987 4,660,051'Thermal transfer printing method'1987

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1987–2007Patents assigned to RICOH KK (30)· patent assignee history

1987–1994Patents assigned to HITACHI LTD (3)· patent assignee history

1987–2007Based in Sagamihara, JP· patent location history

1987–1994Based in Katsuta, JP· patent location history

1989–2021Based in Yokohama, JP· patent location history

1992–2012Patents assigned to SASAKI EIICHI (3)· patent assignee history

2002–2012Based in Kanagawa, JP· patent location history

2012Patents assigned to TYCO ELECTRONICS JAPAN G K (2)· patent assignee history

2012Patents assigned to YONEDA TAKAHIRO (2)· patent assignee history

2018Based in Tokyo, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
RICOH KK	30	1987–2007
HITACHI LTD	3	1987–1994
SASAKI EIICHIself	3	1992–2012
TYCO ELECTRONICS JAPAN G K	2	2012
YONEDA TAKAHIRO	2	2012

Locations

Location	Patents	Span
Sagamihara, JP	22	1987–2007
Yokohama, JP	8	1989–2021
Kanagawa, JP	3	2002–2012
Katsuta, JP	3	1987–1994
Tokyo, JP	1	2018