LexDanaLexDanabeta
Inventor

Keiko Matsumoto

Inventor
Kanagawa, JP

Overview

27→
Patents
1998–2020
Patent span
Physics
Primary field (CPC G)

Patents· 27 as inventor

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

G03Gprimary
G03GElectrography54%
G02BOptical elements, systems or apparatus6%
A61JContainers specially adapted for medical or pharmaceutical purposes3%
A61KPreparations for medical, dental or toiletry purposes3%
B05BSpraying apparatus3%
B65DContainers for storage or transport of articles or materials, e.g. bags, barrels, bottles, boxes, cans, cartons, crates, drums, jars, tanks, hoppers, forwarding containers3%
C12QMeasuring or testing processes involving enzymes, nucleic acids or microorganisms3%
E05YIndexing scheme associated with subclasses e05d and e05f, relating to construction elements, electric control, power supply, power signal or transmission, user interfaces, mounting or coupling, details, accessories, auxiliary operations not otherwise provided for, application thereof3%
G01NInvestigating or analysing materials by determining their chemical or physical properties3%
G01RMeasuring electric variables3%
PatentTitleYear
10,564,654Loop injection mechanism202010,459,071Orthogonal separation device and orthogonal separation method20199,857,745'Image forming apparatus incorporating image reader'20189,651,910'Image forming apparatus incorporating line sensor'20179,366,989'Image forming apparatus'20169,316,954'Image forming apparatus'20168,660,468'Developing device including refill operation'20148,295,737'Developing device and image forming apparatus using same'20128,185,001'Image forming apparatus and method'20128,165,508'Developer loading method, loaded developer accommodating container, developer replenishment device, and image forming apparatus'20128,121,498'Image forming apparatus and developer supply method therefor'20128,086,117'Image forming apparatus and developer replenishing method'20118,064,807'Developer supply system and image forming apparatus incorporating same'20118,014,704'Developing agent storage device and image forming apparatus having same in which the chargeability level of the toner, storage device, and carrier have a specific relationship'20117,991,330'Developing unit including developer conveyance system having supply path, recovery path, and agitation path, process cartridge including developing unit, and image forming apparatus including process cartridge'20117,962,071'Developing device and image forming apparatus using same'20117,925,190'Developer supply device and image forming apparatus comprising same'20117,811,779'Method of multiquantification for cholesterol of low-density lipoprotein'20107,801,467'Developing-agent container, method of manufacturing developing-agent container, developing-agent supplying device, and image forming apparatus'20107,658,338'Small fixed quantity dispenser for aerosol container'20107,550,243'Toner, developer, toner container, process cartridge, fixing process, image forming apparatus, and image forming process'20097,413,839'Toner, developer, toner container, process cartridge, and an image forming apparatus'20087,379,696'Toner for developing electrostatic image, fixing method for fixing image formed of the toner, and image forming method and process cartridge using the toner'20087,022,311'Powdery inhalational preparations and process for producing the same'20066,697,414'Light emitting apparatus'20045,915,059'Optical fiber cable and a method for manufacturing the same'19995,844,410'Device for optically measuring physical quantity in power equipment and method of manufacturing the same'1998

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1998–2020Based in Kyoto, JP· patent location history
2004–2012Based in Yokohama, JP· patent location history
2008–2010Patents assigned to RICOH KK (4)· patent assignee history
2008–2009Based in Susono, JP· patent location history
2010–2018Based in Kanagawa, JP· patent location history
2010–2019Based in Tokyo, JP· patent location history
2011–2018Patents assigned to RICOH CO LTD (15)· patent assignee history
2011–2018Patents assigned to MATSUMOTO KEIKO (11)· patent assignee history
2011–2012Patents assigned to OSHIKAWA YUKI (3)· patent assignee history
2016–2018Patents assigned to SAKURAI YOICHI (4)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
RICOH CO LTD152011–2018
MATSUMOTO KEIKOself112011–2018
RICOH KK42008–2010
SAKURAI YOICHI42016–2018
OSHIKAWA YUKI32011–2012
Locations
LocationPatentsSpan
Kanagawa, JP102010–2018
Yokohama, JP72004–2012
Kyoto, JP31998–2020
Susono, JP32008–2009
Tokyo, JP22010–2019