Inventor · disambiguated record
Katsuyuki Watanabe
Also filed as: WATANABE KATSUYUKI
37 granted patents·5 pending applications·369 citations·filing 1983–2023
97Inventor score
Files withHITACHI LTD20MAXELL LTD19HITACHI CONSUMER ELECTRONICS1MEIDENSHA ELECTRIC MFG CO LTD1YOSHIMARU TAKASHI1
Top patents by PatentIndex Score
42 records- 0197US10171780B2Lighting apparatusMAXELL LTD·Filed 2015·Granted Jan 1, 2019·30 cites·10 claims
- 0281US6587638B1Recording/ reproducing apparatus and input/ output deviceHITACHI LTD·Filed 1999·Granted Jul 1, 2003·36 cites·23 claims
- 0380US11606851B2Lighting apparatusMAXELL LTD·Filed 2020·Granted Mar 14, 2023·1 cites·10 claims
- 0480US4613912ARecording and reproducing apparatus for a video tape recorderHITACHI LTD·Filed 1983·Granted Sep 23, 1986·30 cites·15 claims
- 0577US6008616APole change induction motor and control apparatus and method for the sameMEIDENSHA ELECTRIC MFG CO LTD·Filed 1995·Granted Dec 28, 1999·81 cites·41 claims
- 0676US11153543B2Illuminating apparatusMAXELL LTD·Filed 2017·Granted Oct 19, 2021·2 cites·18 claims
- 0775US10699552B2Lighting apparatusMAXELL LTD·Filed 2019·Granted Jun 30, 2020·1 cites·4 claims
- 0875USD848517SProjectorMAXELL LTD·Filed 2017·Granted May 14, 2019·15 cites·1 claims
- 0975US5978546ADigital/analog compatible video tape recorderHITACHI LTD·Filed 1996·Granted Nov 2, 1999·21 cites·21 claims
- 1074US12464109B2Air floating video display apparatusMAXELL LTD·Filed 2023·Granted Nov 4, 2025·0 cites·5 claims
- 1174US4786986AMagnetic recording and reproducing apparatusHITACHI LTD·Filed 1987·Granted Nov 22, 1988·31 cites·10 claims
- 1272USD844043SProjectorMAXELL LTD·Filed 2017·Granted Mar 26, 2019·13 cites·1 claims
- 1372USD828864SProjectorMAXELL LTD·Filed 2017·Granted Sep 18, 2018·14 cites·1 claims
- 1472US8073312B2Recorder equipped with dubbing functionYOSHIMARU TAKASHI·Filed 2005·Granted Dec 6, 2011·3 cites·4 claims
- 1572US6850694B1Video signal processing apparatusHITACHI LTD·Filed 2000·Granted Feb 1, 2005·13 cites·17 claims
- 1672US6263151B1Recording/reproducing apparatus and reproducing apparatusHITACHI LTD·Filed 1998·Granted Jul 17, 2001·21 cites·31 claims
- 1768US10997846B2Lighting apparatusMAXELL LTD·Filed 2020·Granted May 4, 2021·0 cites·3 claims
- 1868US7457526B2Recording/reproducing apparatus for video/audio signalsHITACHI LTD·Filed 2004·Granted Nov 25, 2008·7 cites·10 claims
- 1965US10551726B2Lighting apparatusMAXELL LTD·Filed 2016·Granted Feb 4, 2020·1 cites·17 claims
- 2063US10602104B2Lighting apparatusMAXELL LTD·Filed 2018·Granted Mar 24, 2020·0 cites·8 claims
- 2162US10708559B2Lighting apparatusMAXELL LTD·Filed 2020·Granted Jul 7, 2020·0 cites·4 claims
- 2262US5047866AComb filter type luminance/chrominance signal separation circuitHITACHI LTD·Filed 1989·Granted Sep 10, 1991·18 cites·3 claims
- 2356US10262519B2Lighting apparatusMAXELL LTD·Filed 2015·Granted Apr 16, 2019·0 cites·9 claims
- 2455US2025004296A1Air floating video display apparatusMAXELL LTD·Filed 2022·Application pending·0 cites
- 2554US7263272B2Digital/analog compatible video tape recorderHITACHI LTD·Filed 2004·Granted Aug 28, 2007·1 cites·5 claims
- 2654US6424787B2Magnetic recording/reproducing apparatus and the same equipped with an image sensorHITACHI LTD·Filed 2001·Granted Jul 23, 2002·1 cites·5 claims
- 2752US7210789B2Liquid crystal display device and liquid crystal cooling unitHITACHI LTD·Filed 2004·Granted May 1, 2007·2 cites·15 claims
- 2852US2024019715A1Air floating video display apparatusMAXELL LTD·Filed 2021·Application pending·0 cites
- 2950USD827693SProjectorMAXELL LTD·Filed 2017·Granted Sep 4, 2018·5 cites·1 claims
- 3047US7198390B2Reflector, projective display and projectorHITACHI LTD·Filed 2004·Granted Apr 3, 2007·1 cites·12 claims
- 3146US2024323343A1Air floating video display apparatusMAXELL LTD·Filed 2022·Application pending·0 cites
- 3245US6798979B2Digital/analog compatible video tape recorderHITACHI LTD·Filed 2001·Granted Sep 28, 2004·0 cites·18 claims
- 3345US4740847AMagnetic recording/reproducing apparatusHITACHI LTD·Filed 1986·Granted Apr 26, 1988·6 cites·4 claims
- 3444US10345689B2Lighting deviceMAXELL LTD·Filed 2015·Granted Jul 9, 2019·0 cites·10 claims
- 3543US7050699B2Recording/reproducing apparatus and reproducing apparatusHITACHI LTD·Filed 2001·Granted May 23, 2006·0 cites·32 claims
- 3643US2006119249A1Flat-panel displayHITACHI LTD·Filed 2005·Application pending·0 cites
- 3740US10677448B2Lighting deviceMAXELL LTD·Filed 2015·Granted Jun 9, 2020·0 cites·4 claims
- 3840US6215948B1Magnetic recording/reproducing apparatus and the same equipped with an image sensorHITACHI LTD·Filed 1997·Granted Apr 10, 2001·6 cites·6 claims
- 3939US6272285B1Digital/analog compatible video tape recorderHITACHI LTD·Filed 1999·Granted Aug 7, 2001·3 cites·22 claims
- 4039US2010295839A1Image Display DeviceHITACHI CONSUMER ELECTRONICS·Filed 2010·Application pending·0 cites
- 4138US5138505ATracking apparatus for a magnetic recording and playback apparatus with independent control of audio head with respect to video headHITACHI LTD·Filed 1989·Granted Aug 11, 1992·3 cites·9 claims
- 4230US5231479ALuminance/chrominance signal separation circuit having filter circuit using pulse patterns suppressing circuitHITACHI LTD·Filed 1990·Granted Jul 27, 1993·3 cites·7 claims
Join the waitlist — get patent alerts
Get an alert when Katsuyuki Watanabe 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 →