Inventor · disambiguated record
Akira Kumagai
Also filed as: KUMAGAI AKIRA
40 granted patents·19 pending applications·1,003 citations·filing 1981–2024
98Inventor score
Top patents by PatentIndex Score
59 records- 0199US6955836B2Silicon oxide film formation methodNEC CORP·Filed 2002·Granted Oct 18, 2005·585 cites·4 claims
- 0297USD320677SGas maskKUMAGAI AKIRA·Filed 1989·Granted Oct 8, 1991·91 cites·1 claims
- 0391US7631274B2Information processing apparatusTOSHIBA KK·Filed 2005·Granted Dec 8, 2009·28 cites·24 claims
- 0490US8663594B2Exhaust gas treating methodKAWAMURA KAZUSHIGE·Filed 2008·Granted Mar 4, 2014·29 cites·6 claims
- 0589US8188776B2Phase-locked loop circuitKUMAGAI AKIRA·Filed 2010·Granted May 29, 2012·10 cites·9 claims
- 0685US12355140B2Antenna deviceAGC INC·Filed 2022·Granted Jul 8, 2025·1 cites·22 claims
- 0785US8503729B2Image processing apparatus, image processing system, and image processing methodKUMAGAI AKIRA·Filed 2011·Granted Aug 6, 2013·12 cites·19 claims
- 0880US6490185B1Method for controlling neutral point potential of inverter of neutral point clamping typeYASKAWA DENKI SEISAKUSHO KK·Filed 2000·Granted Dec 3, 2002·40 cites·8 claims
- 0978US7807553B2Substrate heating apparatus and semiconductor fabrication methodCANON ANELVA CORP·Filed 2007·Granted Oct 5, 2010·7 cites·10 claims
- 1076US9740564B2Information device storing data for system restorationTOSHIBA KK·Filed 2014·Granted Aug 22, 2017·2 cites·21 claims
- 1176US5051856AThin film magnetic head with mixed crystal structuresHITACHI LTD·Filed 1989·Granted Sep 24, 1991·23 cites·13 claims
- 1275US7981216B2Vacuum processing apparatusCANON ANELVA CORP·Filed 2005·Granted Jul 19, 2011·2 cites·2 claims
- 1374US8356167B2Information device, storing predetermined state restoration softwareTOSHIBA KK·Filed 2010·Granted Jan 15, 2013·2 cites·7 claims
- 1473US7666763B2Nanosilicon semiconductor substrate manufacturing method and semiconductor circuit device using nanosilicon semiconductor substrate manufactured by the methodCANON ANELVA CORP·Filed 2008·Granted Feb 23, 2010·4 cites·8 claims
- 1570US8862864B2Information device storing state restoration softwareTOSHIBA KK·Filed 2014·Granted Oct 14, 2014·1 cites·26 claims
- 1670US8284269B2Image pickup apparatusKUMAGAI AKIRA·Filed 2010·Granted Oct 9, 2012·2 cites·3 claims
- 1770US5726838AMagnetic disc apparatus with head having magneto-resistance effectHITACHI LTD·Filed 1995·Granted Mar 10, 1998·23 cites·18 claims
- 1869US5841926AOptical fibers for optical attenuationNIPPON TELEGRAPH & TELEPHONE·Filed 1996·Granted Nov 24, 1998·39 cites·26 claims
- 1969US4409079AMethod of metallizing sintered ceramicsHITACHI LTD·Filed 1982·Granted Oct 11, 1983·23 cites·15 claims
- 2068US7337313B2Information device, storage medium and initial state restoration methodTOSHIBA KK·Filed 2003·Granted Feb 26, 2008·8 cites·5 claims
- 2168US2025083417A1Heat-ray reflecting substrate and window glassAGC INC·Filed 2024·Application pending·0 cites
- 2265US12362496B2Protective plate-equipped reflective memberAGC INC·Filed 2023·Granted Jul 15, 2025·0 cites·7 claims
- 2365US2009104374A1Substrate Processing Method Using A Substrate Processing ApparatusCANON ANELVA CORP·Filed 2008·Application pending·0 cites
- 2464US2009155491A1Film-forming method for forming metal oxide on substrate surfaceANELVA CORP·Filed 2008·Application pending·0 cites
- 2563US12463684B2Reflect array and wireless communication apparatusAGC INC·Filed 2024·Granted Nov 4, 2025·0 cites·21 claims
- 2660US8150243B2Heating process apparatusKUMAGAI AKIRA·Filed 2009·Granted Apr 3, 2012·3 cites·14 claims
- 2759USD320868SGas maskKUMAGAI AKIRA·Filed 1989·Granted Oct 15, 1991·8 cites·1 claims
- 2857US2010126669A1Vacuum treatment apparatusCANON ANELVA CORP·Filed 2008·Application pending·0 cites
- 2957US2006027166A1Substrate Processing Apparatus And Substrate Processing Method Using Such Substrate Processing ApparatusANELVA CORP·Filed 2005·Application pending·0 cites
- 3056US10882329B2Thermal head and thermal printerKYOCERA CORP·Filed 2018·Granted Jan 5, 2021·0 cites·14 claims
- 3156US8887795B2Heat exchanger and water heater including the sameTODA MASAYUKI·Filed 2009·Granted Nov 18, 2014·0 cites·14 claims
- 3256US8736696B2Image processing apparatus, imaging apparatus and image processing methodKUMAGAI AKIRA·Filed 2011·Granted May 27, 2014·1 cites·17 claims
- 3356US8683186B2Information device storing state restoration softwareKUMAGAI AKIRA·Filed 2012·Granted Mar 25, 2014·0 cites·18 claims
- 3456US2009126629A1Film-forming system and film-forming methodKUMAGAI AKIRA·Filed 2008·Application pending·0 cites
- 3555US2024145937A1Radio wave control systemAGC INC·Filed 2024·Application pending·0 cites
- 3654US7814306B2Information device, storage medium and initial state restoration methodTOSHIBA KK·Filed 2008·Granted Oct 12, 2010·0 cites·4 claims
- 3752US11949160B2Distributed antenna and distributed antenna systemAGC INC·Filed 2022·Granted Apr 2, 2024·0 cites·12 claims
- 3851US5576661AFrequency characteristic of semiconductor device in ultra-high frequency bandNEC CORP·Filed 1995·Granted Nov 19, 1996·17 cites·13 claims
- 3951US2006127600A1Film-forming system and film-forming methodKUMAGAI AKIRA·Filed 2006·Application pending·0 cites
- 4051US2024063536A1Reflector system, active reflector, and method of positioning active reflectorAGC INC·Filed 2023·Application pending·0 cites
- 4150US9503670B2Electronic apparatus and display control methodTOSHIBA KK·Filed 2014·Granted Nov 22, 2016·0 cites·8 claims
- 4250US2010037822A1Vacuum processing apparatusCANON ANELVA CORP·Filed 2009·Application pending·0 cites
- 4349US2004191426A1Film-forming method for forming metal oxide on substrate surfaceANELVA CORP·Filed 2004·Application pending·0 cites
- 4448US11272579B2Heat generating componentTOCALO CO LTD·Filed 2017·Granted Mar 8, 2022·0 cites·6 claims
- 4548US5872690AMagnetic transducer and magnetic recording device utilizing material in which undirectional anisotropy can be formedHITACHI LTD·Filed 1997·Granted Feb 16, 1999·10 cites·16 claims
- 4647US2022344832A1Antenna deviceAGC INC·Filed 2022·Application pending·0 cites
- 4744US4623439AThin film of Ni-Co-Fe ternary alloy and process for producing the sameHITACHI LTD·Filed 1984·Granted Nov 18, 1986·7 cites·3 claims
- 4844US2010006560A1Substrate heating apparatus and substrate heating methodCANON ANELVA CORP·Filed 2009·Application pending·0 cites
- 4944US2006250911A1Electronic device having driving device for rotating recording medium, and driving method for driving deviceTOSHIBA KK·Filed 2004·Application pending·0 cites
- 5043US2015172774A1Electronic apparatus and display control methodTOSHIBA KK·Filed 2014·Application pending·0 cites
Showing the top 50 of 59 patent records by PatentIndex Score.
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