Inventor

Takatoshi Hamada

Inventor

Mishima, JP

Overview

1989–2021

Patent span

Physics

Primary field (CPC G)

Patents· 35 as inventor

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

G03Gprimary

G03GElectrography44%

LOC1616%

H04NPictorial communication, e.g. television13%

B41JTypewriters7%

B25DPercussive tools4%

F15BSystems acting by means of fluids in general4%

G02BOptical elements, systems or apparatus4%

G06KGraphical data reading4%

H10WGeneric packages, interconnections, connectors or other constructional details of devices covered by class h102%

PatentTitleYear

11,016,411Process cartridge, developing apparatus, and image forming apparatus2021 10,845,723Photosensitive drum unit to address vibration of a charge roller2020 D0889415Process cartridge for image forming apparatus2020 10,678,164Developer container, developing device and process cartridge2020 10,551,767Manufacturing method for developer container, developer container, developing apparatus, and process cartridge2020 10,466,641Image forming unit to suppress uneven charging2019 D0863419Flange coupling for process cartridge for image forming apparatus2019 D0862585Side cover for process cartridge for image forming apparatus2019 D0862584Side cover for process cartridge for image forming apparatus2019 D0862587Coupling for process cartridge for image forming apparatus2019 D0862586Photosensitive drum for process cartridge for image forming apparatus2019 10,331,077Cartridge where biasing member is reliably held on coupling member2019 D0845384Process cartridge for image forming apparatus2019 10,156,811Conveying device having a first conveyance member that transmits driving force to a second conveyance member2018 10,073,380Feeding device2018 10,007,225Feeding device, process cartridge and image forming apparatus2018 9,904,208'Accommodating container, cleaning device, developing device, process cartridge, and image forming apparatus'2018 9,823,603'Feeding device, cleaning device, developing device, process cartridge, and image forming apparatus'2017 9,778,616'Process cartridge'2017 9,703,231'Image formation optical scanner, image forming apparatus, and non-transitory computer-readable recording medium storing image forming apparatus optical scanning program'2017 9,494,890'Developing cartridge, process cartridge and image forming apparatus'2016 9,448,503'Image forming apparatus'2016 9,164,424'Cartridge with flexible developer bag and elastic member for acting on the developer bag'2015 8,941,701'Image forming apparatus and method for controlling the image forming apparatus'2015 7,639,273'Image forming apparatus'2009 7,432,943'Image forming apparatus'2008 7,193,639'Image forming apparatus'2007 6,980,322'Image forming apparatus in which light emitted by an exposing light source is conducted by an optical waveguide'2005 6,744,459'Image forming apparatus using a single optical fiber to transmit electrical signals'2004 6,340,983'Multi-beam image recording apparatus'2002 6,246,463'Optical laser scanning device and image forming apparatus having the optical laser scanning device'2001 5,987,193'Image writing device and method'1999 4,951,757'Hydraulic striking device with impact frequency control'1990 4,903,119'Semi-conductor device'1990 4,817,737'Hydraulic striking device with impact frequency control'1989

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1989–1990Patents assigned to NITTETSU JITSUGYO CO LTD (2)· patent assignee history

1989–2004Based in Osaka, JP· patent location history

1999–2005Patents assigned to MINOLTA CO LTD (5)· patent assignee history

1999–2015Based in Toyokawa, JP· patent location history

2007–2015Patents assigned to KONICA MINOLTA BUSINESS TECH (4)· patent assignee history

2015–2021Patents assigned to CANON KK (21)· patent assignee history

2015–2021Based in Mishima, JP· patent location history

2016–2017Patents assigned to KONICA MINOLTA INC (2)· patent assignee history

2017–2019Based in Tokyo, JP· patent location history

2019–2020Based in Shizuoka, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
CANON KK	21	2015–2021
MINOLTA CO LTD	5	1999–2005
KONICA MINOLTA BUSINESS TECH	4	2007–2015
KONICA MINOLTA INC	2	2016–2017
NITTETSU JITSUGYO CO LTD	2	1989–1990

Locations

Location	Patents	Span
Mishima, JP	14	2015–2021
Toyokawa, JP	8	1999–2015
Shizuoka, JP	6	2019–2020
Osaka, JP	4	1989–2004
Tokyo, JP	2	2017–2019