Inventor

Susumu Murakami

Inventor

Kyoto, JP

Overview

1979–2021

Patent span

Physics

Primary field (CPC G)

Patents· 84 as inventor

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

G03Gprimary

G03GElectrography37%

H10DInorganic electric semiconductor devices9%

B65HHandling thin or filamentary material, e.g. sheets, webs, cables7%

G03BApparatus or arrangements for taking photographs or for projecting or viewing them4%

H04NPictorial communication, e.g. television3%

Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests3%

Y10TTechnical subjects covered by former us classification3%

C03CChemical composition of glasses, glazes or vitreous enamels2%

G11BInformation storage based on relative movement between record carrier and transducer2%

B42CBookbinding2%

PatentTitleYear

10,989,678X-ray analysis system, x-ray analysis device, and vapor phase decomposition device2021 10,985,649Power conversion device with in-phase and interleave driving based on determination of duty ratio2021 10,493,610Hydraulic hammering device2019 9,465,333'Recording material conveying device and image forming apparatus'2016 9,195,175'Transfer device'2015 9,025,985'Image forming apparatus'2015 8,971,731'Recording material conveying device and image forming apparatus'2015 8,855,513'Image forming apparatus'2014 8,818,240'Transfer device'2014 8,355,659'Fixing device and image forming apparatus having same'2013 8,295,726'Fixing device, image forming apparatus, and method for controlling fixing device'2012 8,292,297'Sheet separation mechanism and image forming apparatus with first and second biasing members'2012 7,917,071'Transfer belt unit and image forming apparatus using the same'2011 7,856,194'Intermediate transfer unit-mounting and dismounting mechanism and intermediate transfer unit-mounting and dismounting method'2010 7,796,919'Image forming apparatus capable of preventing worsening of image quality caused by excessively charged developer'2010 7,684,735'Charging apparatus and image forming apparatus'2010 7,653,325'Electrostatic charger'2010 7,653,319'Image forming apparatus that adds a toner image to a non-image area of a photoreceptor to prevent warping of cleaning blade'2010 7,620,358'Developer collecting apparatus having tiltable waste developer container'2009 7,515,838'Developer collecting device and image forming apparatus having the same'2009 7,512,355'Ozone exhaust system for image forming apparatus'2009 7,418,234'Image forming apparatus'2008 7,403,738'Developer collecting apparatus and image forming apparatus having the same'2008 7,398,041'Color image forming apparatus using base-layer'2008 7,391,990'Waste developer collecting container for color image forming apparatus'2008 7,392,007'Intermediate transfer system and method for cleaning intermediate transfer belt'2008 7,369,800'Device for preventing contact between transfer body and transfer medium tail edge portion in image forming apparatus'2008 7,330,678'Waste developer collecting container for image forming apparatus'2008 7,330,686'Color image forming apparatus including a voltage attenuating intermediate transfer belt'2008 7,305,207'Cleaning system'2007 7,254,359'Transfer apparatus and image forming apparatus'2007 7,251,450'Paper separator and processor cartridge'2007 7,245,865'Transfer apparatus and image forming apparatus'2007 7,236,713'Image forming device including secondary transfer counter roller switchable between ground and electrically floating states to facilitate removal of recording medium from intermediate transfer member'2007 7,221,883'Electrostatic image transfer device using intermediate transfer belt having simplified image transfer voltage requirements'2007 7,218,874'Image forming apparatus and method for controlling fixing mechanism portion'2007 7,215,914'Transfer device'2007 7,164,877'Image forming apparatus'2007 7,159,862'Sheet delivery mechanism for image forming apparatus'2007 7,158,750'Paper transport apparatus and paper transport method'2007 7,130,570'Transfer device'2006 7,108,261'Sheet delivery mechanism'2006 7,062,209'Transfer device with coaxial rotating cams'2006 7,058,336'Access-controlling mechanism and image forming apparatus'2006 6,954,605'Transfer device having casing with elastic member'2005 6,381,442'Image forming apparatus with paper post-treatment device'2002 6,211,772'Semiconductor composite sensor'2001 6,185,367'Apparatus and method for storing and reproducing high-resolution video images'2001 6,008,857'Methods of and apparatus for encoding and decoding digital data for representation in a video frame'1999 5,832,170'Apparatus and method for storing and reproducing high-resolution video images'1998 5,731,075'Colorant for a transparent substrate and method of making the colorant'1998 5,719,634'Methods of and apparatus for encoding and decoding digital data for representation in a video frame'1998 5,683,053'Cine-video film transport apparatus having film supply and take-up reels between which the film is driven at a speed varied in accordance with changes in the outer diameter of the film being unwound from one of the reels'1997 5,679,466'Ultrafine particle dispersed glassy material and method'1997 5,627,387'Overvoltage self-protection semiconductor device, method of fabrication thereof and semiconductor circuit using the same'1997 5,597,614'Ultrafine particle dispersed glassy material and method'1997 5,552,625'Semiconductor device having a semi-insulating layer'1996 5,537,882'Semiconductor sensor for detecting physical amount without thermal hypsteresis where output wiring is disposed in a stress insensitive direction'1996 5,497,984'Sheet post-processing apparatus'1996 5,478,062'Sheet postprocessing apparatus with sheet hold-down arm'1995 5,478,061'Sheet post-processing apparatus'1995 5,474,245'Cine-video film transport apparatus'1995 5,459,338'Gate turn-off thyristor and power convertor using the same'1995 5,430,311'Constant-voltage diode for over-voltage protection'1995 5,419,506'Cine-video film transport apparatus'1995 5,367,429'Electrostatic type micro transducer and control system using the same'1994 5,324,967'Turn off type semiconductor device, method of producing the same and the power conversion apparatus employing the same'1994 5,256,889'Semiconductor rectifying diode with PN geometry'1993 5,235,148'Heating apparatus'1993 5,097,160'Method of transmitting pulse signal and apparatus therefor'1992 5,081,509'Semiconductor rectifying diode with pn geometry'1992 5,049,908'Photographic camera and film'1991 5,015,812'Oven with an exhaust opening for collecting vapors to control material heating'1991 4,952,989'Photoreceptor attachment device for an electrophotographic copying machine'1990 4,849,796'Copy storing tray assembly'1989 4,789,879'Copier for composite copying with automatic magnification adjusting means'1988 4,691,223'Semiconductor device having high breakdown voltage'1987 4,673,218'Tunnel excavation method'1987 4,666,336'Method of and apparatus for building thin lining on tunnel'1987 4,617,080'Film laminating apparatus'1986 4,514,747'Field controlled thyristor with double-diffused source region'1985 4,354,121'Field controlled thyristor control circuit with additional FCT in reverse bias circuit'1982 4,329,772'Method for manufacturing a semiconductor device utilizing selective epitaxial growth and post heat treating'1982 4,136,351'Photo-coupled semiconductor device'1979

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1979–2001Patents assigned to HITACHI LTD (15)· patent assignee history

1986–2001Patents assigned to SONY CORP (7)· patent assignee history

1987–1997Based in Katsuta, JP· patent location history

1988–2016Patents assigned to SHARP KK (48)· patent assignee history

1988–2016Based in Osaka, JP· patent location history

1995–2001Patents assigned to SONY ELECTRONICS INC (7)· patent assignee history

2002–2021Based in Kyoto, JP· patent location history

2005–2007Based in Soraku-gun, JP· patent location history

2010–2011Based in Kizugawa-shi, JP· patent location history

2012–2015Patents assigned to MURAKAMI SUSUMU (6)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
SHARP KK	48	1988–2016
HITACHI LTD	15	1979–2001
SONY CORP	7	1986–2001
SONY ELECTRONICS INC	7	1995–2001
MURAKAMI SUSUMUself	6	2012–2015

Locations

Location	Patents	Span
Kyoto, JP	17	2002–2021
Osaka, JP	12	1988–2016
Soraku-gun, JP	10	2005–2007
Katsuta, JP	9	1987–1997
Kizugawa-shi, JP	4	2010–2011