Inventor · disambiguated record
Ryohei Tokunaga
Also filed as: TOKUNAGA RYOHEI
18 granted patents·21 pending applications·54 citations·filing 2008–2025
89Inventor score
Top patents by PatentIndex Score
39 records- 0177US2025390040A1Image forming apparatus that controls heater of fixing device, according to size of recording sheetKYOCERA DOCUMENT SOLUTIONS INC·Filed 2025·Application pending·0 cites
- 0275US9235181B2Fixing device including fixing belt, detected member co-rotated with fixing belt and rotation detecting part detecting rotation of detected member and image forming apparatus including the sameKYOCERA DOCUMENT SOLUTIONS INC·Filed 2014·Granted Jan 12, 2016·2 cites·18 claims
- 0374USD602500SPumpPANASONIC ELEC WORKS CO LTD·Filed 2008·Granted Oct 20, 2009·21 cites·1 claims
- 0472US2025321517A1Fixing device and image forming apparatusKYOCERA DOCUMENT SOLUTIONS INC·Filed 2025·Application pending·0 cites
- 0572US2025321522A1Fixing device and image forming apparatusKYOCERA DOCUMENT SOLUTIONS INC·Filed 2025·Application pending·0 cites
- 0670US9557691B2Fixing device temperature sensorKYOCERA DOCUMENT SOLUTIONS INC·Filed 2015·Granted Jan 31, 2017·1 cites·4 claims
- 0770US2025321527A1Fixing device and image forming apparatusKYOCERA DOCUMENT SOLUTIONS INC·Filed 2025·Application pending·0 cites
- 0869USD604332SPumpPANASONIC ELEC WORKS CO LTD·Filed 2009·Granted Nov 17, 2009·17 cites·1 claims
- 0968US10514639B2Heating unit, fixing device, and image forming apparatusKYOCERA DOCUMENT SOLUTIONS INC·Filed 2018·Granted Dec 24, 2019·1 cites·10 claims
- 1066US9645534B2Contactless type temperature detecting device configured to detect a temperature of a heated body without contacting, and fixing device and image forming apparatus including the temperature deviceKYOCERA DOCUMENT SOLUTIONS INC·Filed 2016·Granted May 9, 2017·1 cites·10 claims
- 1164US2025244699A1Fixing device and image forming apparatusKYOCERA DOCUMENT SOLUTIONS INC·Filed 2025·Application pending·0 cites
- 1261US12332592B2Fixing device including heater retention member, having slits formed on face opposing inner circumferential surface of fixing belt, and image forming apparatusKYOCERA DOCUMENT SOLUTIONS INC·Filed 2024·Granted Jun 17, 2025·0 cites·4 claims
- 1359USD604331SPumpPANASONIC ELEC WORKS CO LTD·Filed 2009·Granted Nov 17, 2009·11 cites·1 claims
- 1457US12399451B2Fixing device for image forming apparatus with retention member having groove for retaining lubricantKYOCERA DOCUMENT SOLUTIONS INC·Filed 2024·Granted Aug 26, 2025·0 cites·4 claims
- 1556US10386762B2Heating unit including heating parts, in which each heating part includes heating resistors, fixing device including this heating unit, and image forming apparatus including this fixing deviceKYOCERA DOCUMENT SOLUTIONS INC·Filed 2018·Granted Aug 20, 2019·0 cites·12 claims
- 1652US11137705B2Fixing device, image forming apparatusKYOCERA DOCUMENT SOLUTIONS INC·Filed 2021·Granted Oct 5, 2021·0 cites·6 claims
- 1752US10248056B2Fixing device and image forming apparatusKYOCERA DOCUMENT SOLUTIONS INC·Filed 2018·Granted Apr 2, 2019·0 cites·10 claims
- 1851US12013654B2Fixing device and image forming apparatus provided therewithKYOCERA DOCUMENT SOLUTIONS INC·Filed 2022·Granted Jun 18, 2024·0 cites·4 claims
- 1951US2025076799A1Fixing device and image forming apparatus capable of making temperature distribution uniform with simple configurationKYOCERA DOCUMENT SOLUTIONS INC·Filed 2024·Application pending·0 cites
- 2049US11644772B2Image forming apparatusKYOCERA DOCUMENT SOLUTIONS INC·Filed 2022·Granted May 9, 2023·0 cites·4 claims
- 2149US2024427268A1Heater, fixing device and image forming apparatusKYOCERA DOCUMENT SOLUTIONS INC·Filed 2024·Application pending·0 cites
- 2248US11768455B2Fixing device and image forming apparatusKYOCERA DOCUMENT SOLUTIONS INC·Filed 2022·Granted Sep 26, 2023·0 cites·11 claims
- 2348US11614701B2Image forming apparatusKYOCERA DOCUMENT SOLUTIONS INC·Filed 2022·Granted Mar 28, 2023·0 cites·11 claims
- 2448US10416596B2Fixing device and image forming apparatusKYOCERA DOCUMENT SOLUTIONS INC·Filed 2018·Granted Sep 17, 2019·0 cites·20 claims
- 2548US2024288806A1Image forming apparatus that suppresses excessive temperature increase of heater, depending on whether duty ratio for controlling power supply to sub heater is appropriateKYOCERA DOCUMENT SOLUTIONS INC·Filed 2024·Application pending·0 cites
- 2648US2024361716A1Fixing device and image forming apparatusKYOCERA DOCUMENT SOLUTIONS INC·Filed 2024·Application pending·0 cites
- 2748US2024288811A1Image forming apparatus that adjusts pressure to nip region from pressure roller, by switching between normal level and low level lower than normal levelKYOCERA DOCUMENT SOLUTIONS INC·Filed 2024·Application pending·0 cites
- 2845US2025208547A1Heater, fixing device, and image forming apparatusKYOCERA DOCUMENT SOLUTIONS INC·Filed 2023·Application pending·0 cites
- 2944US2010264774A1Insulator structure of motor, and motor-integrated pumpPANASONIC ELEC WORKS CO LTD·Filed 2008·Application pending·0 cites
- 3044US2023168614A1Image forming apparatusKYOCERA DOCUMENT SOLUTIONS INC·Filed 2022·Application pending·0 cites
- 3143US2022317607A1Fixing device and image forming apparatusKYOCERA DOCUMENT SOLUTIONS INC·Filed 2022·Application pending·0 cites
- 3242US2022317604A1Image forming apparatusKYOCERA DOCUMENT SOLUTIONS INC·Filed 2022·Application pending·0 cites
- 3342US2022317606A1Fixing device and image forming apparatusKYOCERA DOCUMENT SOLUTIONS INC·Filed 2022·Application pending·0 cites
- 3442US2022276596A1Fixing device and image forming apparatusKYOCERA DOCUMENT SOLUTIONS INC·Filed 2022·Application pending·0 cites
- 3541US2021389705A1Image forming apparatusKYOCERA DOCUMENT SOLUTIONS INC·Filed 2021·Application pending·0 cites
- 3641US2019056684A1Fixing device and image forming apparatusKYOCERA DOCUMENT SOLUTIONS INC·Filed 2018·Application pending·0 cites
- 3738US2021389706A1Fixing device and image forming apparatusKYOCERA DOCUMENT SOLUTIONS INC·Filed 2021·Application pending·0 cites
- 3836US9377728B2Fixing device and image forming apparatusKYOCERA DOCUMENT SOLUTIONS INC·Filed 2015·Granted Jun 28, 2016·0 cites·9 claims
- 3936US2017205739A1Fixing device and image forming apparatusKYOCERA DOCUMENT SOLUTIONS INC·Filed 2016·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →