Inventor · disambiguated record
Kei Kosaka
Also filed as: KOSAKA KEI
39 granted patents·10 pending applications·178 citations·filing 2005–2025
97Inventor score
Top patents by PatentIndex Score
49 records- 0198US9340009B2Printing apparatus and processing method thereforCANON KK·Filed 2015·Granted May 17, 2016·14 cites·17 claims
- 0297US9517628B2Printing apparatus, method, and non-transitory storage mediumCANON KK·Filed 2015·Granted Dec 13, 2016·19 cites·18 claims
- 0396US10207506B2Inkjet printing apparatus and recovery method of print headCANON KK·Filed 2015·Granted Feb 19, 2019·11 cites·6 claims
- 0496US9597888B2Printing apparatus and ink amount control method for ink tankCANON KK·Filed 2015·Granted Mar 21, 2017·8 cites·26 claims
- 0596US9446595B2Ink jet printing apparatus and method for controlling the sameCANON KK·Filed 2015·Granted Sep 20, 2016·22 cites·6 claims
- 0696US9272522B1Printing apparatus and ink amount detection methodCANON KK·Filed 2015·Granted Mar 1, 2016·12 cites·10 claims
- 0796US9108410B2Printing apparatus and control methodCANON KK·Filed 2014·Granted Aug 18, 2015·12 cites·20 claims
- 0894US11192379B2Printing apparatus, control method of the same, and transportation method of the sameCANON KK·Filed 2020·Granted Dec 7, 2021·3 cites·19 claims
- 0994US9138991B2Printing apparatus and control method thereofCANON KK·Filed 2013·Granted Sep 22, 2015·9 cites·14 claims
- 1094US9028049B2Inkjet printing apparatus and inkjet printing methodCANON KK·Filed 2013·Granted May 12, 2015·9 cites·16 claims
- 1193US11827023B2Liquid discharge apparatus and control method thereofCANON KK·Filed 2021·Granted Nov 28, 2023·2 cites·20 claims
- 1292US8931875B2Inkjet printing apparatus and inkjet printing methodKOSAKA KEI·Filed 2012·Granted Jan 13, 2015·9 cites·26 claims
- 1389US8950845B2Printing apparatusCANON KK·Filed 2013·Granted Feb 10, 2015·4 cites·4 claims
- 1488US10427411B2Ink-jet printing apparatus and cleaning methodCANON KK·Filed 2018·Granted Oct 1, 2019·3 cites·10 claims
- 1588US8464573B2Gas concentration detection sensorSEKIYA TAKAYUKI·Filed 2010·Granted Jun 18, 2013·8 cites·9 claims
- 1687US11474089B2Sensor element and gas sensorNGK INSULATORS LTD·Filed 2019·Granted Oct 18, 2022·2 cites·15 claims
- 1787US11391691B2Gas sensorNGK INSULATORS LTD·Filed 2019·Granted Jul 19, 2022·2 cites·13 claims
- 1887US8727477B2Ink-jet printing apparatus and ink stain detection method in the sameKOSAKA KEI·Filed 2012·Granted May 20, 2014·5 cites·11 claims
- 1986US11919309B2Liquid discharge apparatus, control method, and computer-readable storage mediumCANON KK·Filed 2021·Granted Mar 5, 2024·1 cites·9 claims
- 2086US8449743B2Gas sensorSEKIYA TAKAYUKI·Filed 2010·Granted May 28, 2013·7 cites·6 claims
- 2183US8479561B2Gas concentration detection sensorSEKIYA TAKAYUKI·Filed 2011·Granted Jul 9, 2013·6 cites·7 claims
- 2283US2025256514A1Printing apparatus and ink quantity detection method thereofCANON KK·Filed 2025·Application pending·0 cites
- 2380US12409661B2Liquid discharge apparatus and control method thereofCANON KK·Filed 2023·Granted Sep 9, 2025·0 cites·15 claims
- 2478US12304214B2Printing apparatus and ink quantity detection method thereofCANON KK·Filed 2022·Granted May 20, 2025·0 cites·12 claims
- 2578US2024239105A1Liquid discharge apparatus, control method, and computer-readable storage mediumCANON KK·Filed 2024·Application pending·0 cites
- 2674US11833816B2Printing apparatus and recovery method thereforCANON KK·Filed 2022·Granted Dec 5, 2023·0 cites·13 claims
- 2774US7632741B2Method for forming AlGaN crystal layerNGK INSULATORS LTD·Filed 2008·Granted Dec 15, 2009·4 cites·16 claims
- 2873US12007352B2Gas sensorNGK INSULATORS LTD·Filed 2022·Granted Jun 11, 2024·0 cites·7 claims
- 2973US11692986B2Sensor element and gas sensorNGK INSULATORS LTD·Filed 2022·Granted Jul 4, 2023·0 cites·15 claims
- 3071US8864256B2Image processing apparatus for processing multivalue image data in an area corresponding to an overlapped portion of nozzle arraysAZUMA SATOSHI·Filed 2010·Granted Oct 21, 2014·3 cites·14 claims
- 3171US8671740B2Gas concentration detection sensorSEKIYA TAKAYUKI·Filed 2011·Granted Mar 18, 2014·2 cites·4 claims
- 3270US11351794B2Printing apparatus and ink quantity detection method thereofCANON KK·Filed 2020·Granted Jun 7, 2022·0 cites·17 claims
- 3364US11338579B2Printing apparatus and recovery method thereforCANON KK·Filed 2020·Granted May 24, 2022·0 cites·18 claims
- 3462US7713847B2Method for forming AlGaN crystal layerNGK INSULATORS LTD·Filed 2008·Granted May 11, 2010·1 cites·9 claims
- 3558US11780231B2Ejection apparatus and wiping methodCANON KK·Filed 2022·Granted Oct 10, 2023·0 cites·17 claims
- 3655US10201977B2Ink-jet printing apparatus and cleaning methodCANON KK·Filed 2017·Granted Feb 12, 2019·0 cites·13 claims
- 3755US2025133288A1Information processing deviceTOYOTA MOTOR CO LTD·Filed 2024·Application pending·0 cites
- 3854US2025130691A1Storage mediumTOYOTA MOTOR CO LTD·Filed 2024·Application pending·0 cites
- 3953US11766868B2Ejection apparatus and wiping methodCANON KK·Filed 2022·Granted Sep 26, 2023·0 cites·17 claims
- 4053US2024300424A1Information processing apparatus, information processing method, and in-vehicle apparatusTOYOTA MOTOR CO LTD·Filed 2024·Application pending·0 cites
- 4152US12474293B2Sensor element and gas sensorNGK INSULATORS LTD·Filed 2022·Granted Nov 18, 2025·0 cites·5 claims
- 4252US11391689B2Gas sensorNGK INSULATORS LTD·Filed 2019·Granted Jul 19, 2022·0 cites·6 claims
- 4350US2012033006A1Printing apparatus and processing method thereforMURAYAMA YOSHIAKI·Filed 2010·Application pending·0 cites
- 4450US2023384256A1Sensor element and gas sensorNGK INSULATORS LTD·Filed 2023·Application pending·0 cites
- 4549US7635944B2Electron-emitting device and method for manufacturing sameNGK INSULATORS LTD·Filed 2005·Granted Dec 22, 2009·0 cites·8 claims
- 4649US2012050376A1Printing apparatusNAGOSHI SHIGEYASU·Filed 2010·Application pending·0 cites
- 4740US2013076811A1Inkjet recording apparatusHONDA YOSHIYUKI·Filed 2012·Application pending·0 cites
- 4835US10286649B2Inkjet recording apparatus and cleaning methodCANON KK·Filed 2017·Granted May 14, 2019·0 cites·15 claims
- 4934US2012069067A1Printing apparatus and method for controlling printing apparatusTORIGOE MAKOTO·Filed 2010·Application pending·0 cites
Join the waitlist — get patent alerts
Get an alert when Kei Kosaka files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →