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Inventor

Masahiko Ishikawa

Inventor
Shizuoka, JP

Overview

21→
Patents
1994–2019
Patent span
Performing operations
Primary field (CPC B)

Patents· 21 as inventor

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

G03Gprimary
G03GElectrography17%
B41JTypewriters7%
C09DCoating compositions, e.g. paints, varnishes or lacquers7%
B01JChemical or physical processes, e.g. catalysis or colloid chemistry5%
B29BPreparation or pretreatment of the material to be shaped5%
B32BLayered products, i.e. products built-up of strata of flat or non-flat, e.g. cellular or honeycomb, form5%
C08GMacromolecular compounds obtained otherwise than by reactions only involving unsaturated carbon-to-carbon bonds5%
C08LCompositions of macromolecular compounds5%
H01JElectric discharge tubes or discharge lamps5%
H05KPrinted circuits5%
PatentTitleYear
10,286,666Ink discharge device and ink discharge method201910,266,710Ink, image forming method, and liquid discharging device201910,190,007Ink, ink container, image forming method, image forming apparatus, and image formed matter201910,151,991Toner, toner stored unit, and image forming apparatus201810,113,078Ink discharge device and ink discharge method20189,971,261Toner20189,785,065'Toner, and method for manufacturing toner'20179,618,862'Toner and developer'20179,618,863'Toner, developer and method of manufacturing toner'20179,482,973'Toner, method of manufacturing the toner, developer, and process cartridge'20169,248,608'Manufacturing method and manufacturing apparatus of an absorbent body'20168,906,573'Reinforced solid polymer electrolyte composite membrane, membrane electrode assembly for solid polymer fuel cell, and solid polymer fuel cell'20148,889,570'Light-transmitting electromagnetic-shielding laminate and method for producing the same, light-transmitting radio wave absorber, and adhesive composition'20148,063,391'Light-transmitting electromagnetic wave-shielding material'20117,865,114'Image forming apparatus, image forming method and process cartridge'20115,812,863'Apparatus for correcting misspelling and incorrect usage of word'19985,457,174'Method for preparing polycarbonates by transesterification in a steel reactor'19955,394,014'Semiconductor device improved in light shielding property and light shielding package'19955,379,263'Semiconductor memory device which can provide required data flexibly under simplified control and operating method therefor'19955,321,097'Heat-resistant resin composition'19945,317,195'Semiconductor device improved in light shielding property and light shielding package'1994

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1994–1995Based in Hyogo, JP· patent location history
1995–1998Based in Ibaraki, JP· patent location history
2011–2019Patents assigned to ISHIKAWA MASAHIKO (14)· patent assignee history
2011–2019Patents assigned to RICOH CO LTD (11)· patent assignee history
2011–2014Based in Tokyo, JP· patent location history
2016–2018Patents assigned to MORIYA YOSHIHIRO (6)· patent assignee history
2016–2018Patents assigned to TAKAHASHI SATOSHI (6)· patent assignee history
2016–2018Patents assigned to YAMAGUCHI TATSUKI (6)· patent assignee history
2016–2019Based in Shizuoka, JP· patent location history
2016Based in Kagawa, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
ISHIKAWA MASAHIKOself142011–2019
RICOH CO LTD112011–2019
MORIYA YOSHIHIRO62016–2018
TAKAHASHI SATOSHI62016–2018
YAMAGUCHI TATSUKI62016–2018
Locations
LocationPatentsSpan
Shizuoka, JP102016–2019
Tokyo, JP32011–2014
Hyogo, JP31994–1995
Ibaraki, JP21995–1998
Kagawa, JP12016