Inventor

Kazuyoshi Hagiwara

Inventor

Kanagawa, JP

Overview

1992–2019

Patent span

Physics

Primary field (CPC G)

Patents· 37 as inventor

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

G03Gprimary

G03GElectrography52%

Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests12%

G02BOptical elements, systems or apparatus8%

G03BApparatus or arrangements for taking photographs or for projecting or viewing them7%

H02KDynamo-electric machines5%

C07CAcyclic or carbocyclic compounds3%

F16FSprings3%

B41JTypewriters2%

C01GCompounds containing metals not covered by subclasses c01d or c01f2%

C01PIndexing scheme relating to structural and physical aspects of solid inorganic compounds2%

PatentTitleYear

10,514,634Image forming device have a reducing element reduces an amount of current to a face-forming member upstream of a transfer region2019 9,829,834Flywheel and image forming apparatus2017 9,810,874'Lens driver'2017 9,727,007'Rotary device and image forming apparatus'2017 9,547,148'Lens driving device'2017 9,465,327'Transfer mechanism and image forming apparatus'2016 9,465,347'Transport device and image forming apparatus that can align a transfer belt'2016 9,335,508'Lens driving device'2016 9,335,507'Lens driving device'2016 9,046,866'Cleaning device and image forming apparatus'2015 8,897,668'Cleaning device and image forming apparatus including the same'2014 8,879,968'Image forming apparatus including a correction function for deviation of an endless belt'2014 8,862,019'Cleaning device and image forming apparatus including the same'2014 8,744,302'Cleaning device, image forming apparatus, and transfer unit including pressing unit'2014 7,880,983'Lens driving device'2011 7,844,199'Image forming apparatus having detachable intermediate transfer body'2010 6,934,497'Image forming apparatus with belt, plural sensitized bodies, and belt positioning mechanism'2005 6,541,174'Method using toner and developer for developing electrostatic image'2003 6,187,496'Toner and developer for developing electrostatic image, process for production thereof and image forming method'2001 6,077,638'Toner and developer for developing electrostatic image, process for production thereof and image forming method'2000 6,057,073'Toner for developing electrostatic image, image forming method, developing apparatus unit, and process cartridge'2000 5,765,082'Color image forming apparatus having shiftable transfer conveyor belt and attraction assisting roller'1998 5,716,746'Magnetic toner and process for producing magnetic toner'1998 5,710,965'Developer for developing electrostatic images and image forming method'1998 5,500,046'Toner for developing electrostatic images, image forming apparatus, apparatus unit and facsimile apparatus'1996 5,447,813'Toner for developing electrostatic image and image forming method'1995 5,436,701'Image forming method, image forming apparatus and apparatus unit'1995 5,406,357'Developer for developing electrostatic image, image forming method, image forming apparatus and apparatus unit'1995 5,389,484'Toner for developing electrostatic images, image forming apparatus, apparatus unit and facsimile apparatus'1995 5,356,749'Imaging method comprising a developer having a novel guanidine type compound'1994 5,354,637'Magnetic toner'1994 5,288,579'Developer for developing electrostatic image, image forming apparatus, apparatus unit and facsimile apparatus'1994 5,268,248'Toner for developing electrostatic image and process for production thereof'1993 5,246,810'Guanidine type compound, toner for developing electrostatic images, developer for developing electrostatic images'1993 5,214,208'Toner containing a dimer of diarylguanidine type compound for developing electrostatic image'1993 5,121,521'Mechanism for opening and closing an openable apparatus'1992 5,084,369'Toner containing a dimer of diarylguanidine type compound for developing electrostatic image'1992

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1992–2003Patents assigned to CANON KK (18)· patent assignee history

1992–1994Based in Yokohama, JP· patent location history

1994–2003Based in Tokyo, JP· patent location history

2005–2019Patents assigned to FUJI XEROX CO LTD (12)· patent assignee history

2005–2010Based in Ebina, JP· patent location history

2011–2019Based in Kanagawa, JP· patent location history

2014Patents assigned to HAGIWARA KAZUYOSHI (4)· patent assignee history

2014Based in Kazuyoshi, JP· patent location history

2016–2017Patents assigned to HUIZHOU DAYA BAY JSS OPTICAL TECHNOLOGY CO LTD (4)· patent assignee history

2016–2017Patents assigned to JSS OPTICAL TECHNOLOGY CO LTD (4)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
CANON KK	18	1992–2003
FUJI XEROX CO LTD	12	2005–2019
HAGIWARA KAZUYOSHIself	4	2014
HUIZHOU DAYA BAY JSS OPTICAL TECHNOLOGY CO LTD	4	2016–2017
JSS OPTICAL TECHNOLOGY CO LTD	4	2016–2017

Locations

Location	Patents	Span
Kanagawa, JP	14	2011–2019
Tokyo, JP	12	1994–2003
Yokohama, JP	6	1992–1994
Ebina, JP	2	2005–2010
Kazuyoshi, JP	1	2014