Inventor · disambiguated record
Akira Hirota
Also filed as: HIROTA AKIRA
44 granted patents·2 pending applications·414 citations·filing 1976–2025
98Inventor score
Files withVICTOR COMPANY OF JAPAN34KONICA MINOLTA BUSINESS TECH4MINOLTA CO LTD2MITSUBISHI HITACHI POWER SYS LTD2TOYOTA MOTOR CO LTD2
Top patents by PatentIndex Score
46 records- 0180US4246615ASystem for recording and/or reproducing an audio signal which has been converted into a digital signalVICTOR COMPANY OF JAPAN·Filed 1978·Granted Jan 20, 1981·23 cites·9 claims
- 0279US4536795AVideo memory deviceVICTOR COMPANY OF JAPAN·Filed 1983·Granted Aug 20, 1985·31 cites·8 claims
- 0378US4178606AColor video signal recording and/or reproducing systemVICTOR COMPANY OF JAPAN·Filed 1976·Granted Dec 11, 1979·23 cites·25 claims
- 0476US7347579B2Buckle apparatus and seat belt apparatusTAKATA CORP·Filed 2006·Granted Mar 25, 2008·8 cites·4 claims
- 0571US11530628B2Denitration device, heat recovery steam generator having the same, gas turbine combined cycle power plant and method of denitrationMITSUBISHI HITACHI POWER SYS LTD·Filed 2019·Granted Dec 20, 2022·1 cites·4 claims
- 0671US5940661AImage forming apparatus with a charging member which removes smears on an image forming memberMINOLTA CO LTD·Filed 1998·Granted Aug 17, 1999·22 cites·35 claims
- 0770US4618893ANoise reducing system for video signalVICTOR COMPANY OF JAPAN·Filed 1984·Granted Oct 21, 1986·19 cites·6 claims
- 0870US4587576AVideo signal processing apparatus with pre-emphasis and de-emphasis for use in a recording and reproducing systemVICTOR COMPANY OF JAPAN·Filed 1983·Granted May 6, 1986·19 cites·16 claims
- 0969US4068257AColor video signal recording and/or reproducing systemVICTOR COMPANY OF JAPAN·Filed 1976·Granted Jan 10, 1978·16 cites·8 claims
- 1068US4626927ARecording and reproducing apparatus for recording and reproducing a carrier chrominance signal with pre-emphasis and de-emphasisVICTOR COMPANY OF JAPAN·Filed 1984·Granted Dec 2, 1986·17 cites·10 claims
- 1167US4682251AVideo signal reproducing apparatus having a noise reduction circuitVICTOR COMPANY OF JAPAN·Filed 1985·Granted Jul 21, 1987·22 cites·12 claims
- 1265US4607285ANoise reducing system for video signalVICTOR COMPANY OF JAPAN·Filed 1984·Granted Aug 19, 1986·16 cites·9 claims
- 1362US4246616ASystem for reproducing a video signal in a slow motion or still picture reproductionVICTOR COMPANY OF JAPAN·Filed 1979·Granted Jan 20, 1981·13 cites·7 claims
- 1460US4563704ANoise reduction circuit for a video signalVICTOR COMPANY OF JAPAN·Filed 1982·Granted Jan 7, 1986·13 cites·9 claims
- 1559US2025252858A1Control device, method, and non-transitory storage mediumTOYOTA MOTOR CO LTD·Filed 2024·Application pending·0 cites
- 1658US7738815B2Image forming apparatus including a toner discharge operationKONICA MINOLTA BUSINESS TECH·Filed 2008·Granted Jun 15, 2010·1 cites·5 claims
- 1758US5051846AMagnetic video tape recording and reproducing apparatusVICTOR COMPANY OF JAPAN·Filed 1988·Granted Sep 24, 1991·15 cites·12 claims
- 1857US4414586APilot signal recording and reproducing systemVICTOR COMPANY OF JAPAN·Filed 1981·Granted Nov 8, 1983·10 cites·6 claims
- 1954US4486789AMagnetic recording and/or reproducing apparatusVICTOR COMPANY OF JAPAN·Filed 1982·Granted Dec 4, 1984·8 cites·9 claims
- 2053US4639805ACombination of reproducing heads and a rotary transformer deviceVICTOR COMPANY OF JAPAN·Filed 1983·Granted Jan 27, 1987·8 cites·6 claims
- 2153US4476501AAudio signal recording and/or reproducing system for eliminating audio crosstalkVICTOR COMPANY OF JAPAN·Filed 1982·Granted Oct 9, 1984·10 cites·8 claims
- 2253US2025292692A1Information processing apparatus, aircraft control method, and method for improving travel maasTOYOTA MOTOR CO LTD·Filed 2025·Application pending·0 cites
- 2352US4295171ASystem for controlling rotation of rotating structureVICTOR COMPANY OF JAPAN·Filed 1980·Granted Oct 13, 1981·12 cites·6 claims
- 2451US4342053AVideo signal, speed-change reproducing systemVICTOR COMPANY OF JAPAN·Filed 1979·Granted Jul 27, 1982·8 cites·5 claims
- 2550US4490749AColor video signal recording and/or reproducing systemVICTOR COMPANY OF JAPAN·Filed 1981·Granted Dec 25, 1984·9 cites·3 claims
- 2650US4402022ATracking control system in a magnetic reproducing apparatusVICTOR COMPANY OF JAPAN·Filed 1981·Granted Aug 30, 1983·7 cites·6 claims
- 2749US5911097AImage forming apparatus and method using charge control meansMINOLTA CO LTD·Filed 1998·Granted Jun 8, 1999·9 cites·23 claims
- 2849US4364098AMultiple-channel rotary transformer circuit in a magnetic recording and/or reproducing apparatusVICTOR COMPANY OF JAPAN·Filed 1980·Granted Dec 14, 1982·8 cites·2 claims
- 2948US4064537AAmplitude limiting circuit for frequency modulated video signalsVICTOR COMPANY OF JAPAN·Filed 1976·Granted Dec 20, 1977·7 cites·5 claims
- 3046US4558353ACircuit for reducing noise in a carrier chrominance signalVICTOR COMPANY OF JAPAN·Filed 1983·Granted Dec 10, 1985·7 cites·7 claims
- 3145US4682250AApparatus for recording a video signal sampled at frequency fs and reproducing the video signal as a signal essentially sampled at frequency 2fsVICTOR COMPANY OF JAPAN·Filed 1984·Granted Jul 21, 1987·7 cites·6 claims
- 3243US11441774B2Method for operating flue gas purification systemMITSUBISHI HITACHI POWER SYS LTD·Filed 2017·Granted Sep 13, 2022·0 cites·7 claims
- 3343US4646165AChrominance signal recording apparatus utilizing digital sampling and quantizing techniquesVICTOR COMPANY OF JAPAN·Filed 1984·Granted Feb 24, 1987·6 cites·8 claims
- 3440US4635116AVideo signal delay circuitVICTOR COMPANY OF JAPAN·Filed 1985·Granted Jan 6, 1987·7 cites·16 claims
- 3540US4622597ASound and video multiplex recording systemVICTOR COMPANY OF JAPAN·Filed 1983·Granted Nov 11, 1986·5 cites·6 claims
- 3638US7324776B2Image forming apparatus, charge controlling apparatus, and image forming methodKONICA MINOLTA BUSINESS TECH·Filed 2005·Granted Jan 29, 2008·0 cites·23 claims
- 3737US7092649B2Charging device and image forming apparatus provided therewithKONICA MINOLTA BUSINESS TECH·Filed 2004·Granted Aug 15, 2006·0 cites·21 claims
- 3837US4719518AMagnetic recording apparatus for carrying out recording by selectively using one of two kinds of recording systemsVICTOR COMPANY OF JAPAN·Filed 1986·Granted Jan 12, 1988·5 cites·12 claims
- 3937US4425584AVideo signal recording and/or reproducing systemVICTOR COMPANY OF JAPAN·Filed 1981·Granted Jan 10, 1984·5 cites·6 claims
- 4035US7197264B2Image forming apparatusKONICA MINOLTA BUSINESS TECH·Filed 2004·Granted Mar 27, 2007·0 cites·16 claims
- 4135US5062008ARecording of frequency-multiplex signal on recording mediumVICTOR COMPANY OF JAPAN·Filed 1990·Granted Oct 29, 1991·2 cites·8 claims
- 4235US4757391AHelical scan type magnetic recording and reproducing apparatus recording multiple signals on multiple axially displaced tape tracksVICTOR COMPANY OF JAPAN·Filed 1986·Granted Jul 12, 1988·4 cites·7 claims
- 4334US4626934ACue signal recording circuit for magnetic recording and reproducing apparatusVICTOR COMPANY OF JAPAN·Filed 1985·Granted Dec 2, 1986·4 cites·7 claims
- 4433US6316032B1Barley malt oil containing vegetable ceramide-associated substances and process for producing the sameSAPPORO BREWERIES·Filed 1998·Granted Nov 13, 2001·1 cites·42 claims
- 4532US4644412AVideo signal recording and reproducing apparatusVICTOR COMPANY OF JAPAN·Filed 1985·Granted Feb 17, 1987·3 cites·7 claims
- 4631US4593327AColor video signal recording and/or reproducing systemVICTOR COMPANY OF JAPAN·Filed 1983·Granted Jun 3, 1986·3 cites·8 claims
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