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Inventor

Koji Kawai

Inventor
Shiojiri, JP

Overview

70→
Patents
1987–2021
Patent span
Performing operations
Primary field (CPC B)

Patents· 70 as inventor

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

H01Jprimary
H01JElectric discharge tubes or discharge lamps14%
B41JTypewriters13%
H04NPictorial communication, e.g. television12%
LOC189%
B41MPrinting, duplicating, marking, or copying processes4%
C09KMaterials for miscellaneous applications, not provided for elsewhere4%
G02BOptical elements, systems or apparatus4%
G06KGraphical data reading4%
A63HToys, e.g. tops, dolls, hoops or building blocks3%
LOC143%
PatentTitleYear
10,981,390Liquid container and liquid injection apparatus202110,538,095Droplet ejecting apparatus202010,432,108Power supply system2019D0856412Printer201910,343,409Liquid jet apparatus, tank unit, and printer2019D0841085Printer2019D0839342Printer201910,183,491Cap attached to ink tank of printer201910,118,398Plug member and liquid container unit2018D0829276Printer2018D0828442Printer201810,011,118Recording apparatus2018D0817392Ink cartridge20189,852,898Target for ultraviolet light generation, electron beam-excited ultraviolet light source, and production method for target for ultraviolet light generation2017D0802050'Ink tank container for a printer'20179,728,393'Target for ultraviolet light generation, electron beam-excited ultraviolet light source, and production method for target for ultraviolet light generation'20179,707,768'Plug member and liquid container unit'20179,707,769'Recording apparatus'20179,676,201'Liquid container and liquid ejection apparatus'2017D0786345'Ink tank cap'2017D0784444'Ink tank for printer'2017D0780842'Ink tank for printer'2017D0780258'Ink tank for printer'2017D0780257'Ink tank for printer'2017D0780259'Ink tank for printer'20179,318,312'Ultraviolet light generating target, electron-beam-excited ultraviolet light source, and method for producing ultraviolet light generating target'2016D0751613'Combined container and ink tanks for a printer'20169,240,313'Target for ultraviolet light generation, electron beam-excited ultraviolet light source, and production method for target for ultraviolet light generation'20169,128,488'Movement direction control apparatus and computer program'2015D0723958'Infrared ray sensor'20158,895,947'Ultraviolet light generating target, electron-beam-excited ultraviolet light source, and method for producing ultraviolet light generating target'20148,548,679'Overturn prevention control device for two-wheel vehicle'20138,335,612'Falling prevention controlling device and computer program'20128,277,012'Recording apparatus'20128,149,471'Image reading apparatus, image reading method and image reading program for cross-talk noise reduction'20128,147,145'Journal bearing device'20127,961,361'Image reading apparatus, image reading method and image reading program'20117,850,287'Liquid ejection apparatus'20107,748,814'Ink-jet recording apparatus'2010D0605963'Rotatable infrared sensor'20097,429,826'Indirectly heated electrode for gas discharge tube, gas discharge tube using said indirectly heated electrode, and lighting device for said gas discharge tube'20087,218,047'Indirectly heated electrode for gas discharge tube'20077,193,367'Indirectly heated electrode for gas discharge tube, gas discharge tube with this, and its operating device'20077,022,977'Light beam scanning apparatus'20066,956,326'Gas discharge tube having insulator between aperture members'20056,873,107'Gas discharge tube having multiple stem pins'20056,870,317'Gas discharge tube'20056,839,073'Image forming apparatus'20056,794,334'Thermo reversible recording medium, member having information memorizing part, thermo reversible recording label, method of and apparatus for image processing'20046,710,793'Light beam scanning apparatus and image forming apparatus'20046,693,658'Light beam scanning apparatus'20046,677,974'Light beam scanning apparatus with a multi-layer mirror structure'20046,661,444'Light beam scanning apparatus'20036,646,668'Image forming apparatus for maintaining a constant beam scanning state'20036,639,620'Light beam scanning apparatus'20036,549,265'Image formation apparatus and method of stabilizing the emission level of semiconductor laser source used therein'20036,509,921'Light beam scanning apparatus with multiple sensors and patterns'20036,489,265'Reversible thermosensitive recording medium, method of producing the medium, information recording devices using the medium, and image formation and erasing method using the medium'20026,462,855'Light beam scanning apparatus'20026,426,767'Image forming apparatus for maintaining a constant beam scanning state'20026,362,130'Reversible thermosensitive recording medium, card, label, disk, disk cartridge, tape cassette, method of producing the recording medium, and method of recording and erasing images using the same'20026,174,836'Reversible thermosensitive recording medium, method of producing the medium, information recording devices using the medium, and image formation and erasing method using the medium'20015,359,255'Discharge tube having a double-tube type structure'19945,210,065'Color-forming recording material'19935,191,260'Gas discharge tube providing improved flow line of electrons'19935,159,236'Indirectly heated cathode for a gas discharge tube'19925,057,742'Discharge tube'19915,047,689'Gas discharge tube, indirectly heated cathode for use therein and drive circuit therefor'19914,738,083'Apparatus for supplying articles to a high-speed packing machine'19884,685,272'Sheet separating device in a packaging machine'1987

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1991–2017Patents assigned to HAMAMATSU PHOTONICS KK (16)· patent assignee history
1991–2015Based in Shizuoka, JP· patent location history
1993–2017Based in Hamamatsu, JP· patent location history
2002–2012Patents assigned to TOSHIBA TEC KK (14)· patent assignee history
2002–2004Based in Fujisawa, JP· patent location history
2003–2012Patents assigned to TOSHIBA KK (9)· patent assignee history
2012–2016Patents assigned to KAWAI KOJI (8)· patent assignee history
2012–2019Based in Nagaokakyo, JP· patent location history
2016–2021Patents assigned to SEIKO EPSON CORP (23)· patent assignee history
2016–2021Based in Shiojiri, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
SEIKO EPSON CORP232016–2021
HAMAMATSU PHOTONICS KK161991–2017
TOSHIBA TEC KK142002–2012
TOSHIBA KK92003–2012
KAWAI KOJIself82012–2016
Locations
LocationPatentsSpan
Shiojiri, JP222016–2021
Hamamatsu, JP131993–2017
Fujisawa, JP92002–2004
Shizuoka, JP71991–2015
Nagaokakyo, JP32012–2019