Inventor · disambiguated record
Akira Katayama
Also filed as: HOZUMI TOSHIAKI · KATAYAMA AKIRA
140 granted patents·11 pending applications·2,820 citations·filing 1978–2024
99Inventor score
Top patents by PatentIndex Score
151 records- 0196US6194535B1Electrophotographic photoconductor and aromatic polycarbonate resin for use thereinRICOH KK·Filed 1999·Granted Feb 27, 2001·85 cites·6 claims
- 0296US6066428AElectrophotographic photoconductor and aromatic polycarbonate resin for use thereinRICOH KK·Filed 1998·Granted May 23, 2000·100 cites·6 claims
- 0395US5942363AElectrophotographic photoconductor and aromatic polycarbonate resin for use thereinRICOH KK·Filed 1996·Granted Aug 24, 1999·72 cites·22 claims
- 0495US5846680AElectrophotographic photoconductor and aromatic polycarbonate resin for use thereinRICOH KK·Filed 1996·Granted Dec 8, 1998·70 cites·22 claims
- 0594US6191249B1Electrophotographic photoconductor and aromatic polycarbonate resin for use thereinRICOH KK·Filed 1999·Granted Feb 20, 2001·64 cites·22 claims
- 0694US5910561AElectrophotographic photoconductor and aromatic polycarbonate resin for use thereinRICOH KK·Filed 1998·Granted Jun 8, 1999·60 cites·22 claims
- 0794US5840454AAromatic polycarbonate and electrophotographic photosensitive medium using sameRICOH KK·Filed 1996·Granted Nov 24, 1998·62 cites·15 claims
- 0894US5789128AElectrophotographic photoconductor and aromatic polycarbonate resin for use thereinRICOH KK·Filed 1996·Granted Aug 4, 1998·73 cites·28 claims
- 0993US6069224AElectrophotographic photoconductor and aromatic polycarbonate resin for use thereinRICOH KK·Filed 1998·Granted May 30, 2000·54 cites·28 claims
- 1093US5173717AInk jet recording head in which the ejection elements are driven in blocksCANON KK·Filed 1991·Granted Dec 22, 1992·77 cites·12 claims
- 1192US5416558ACamera with shake preventing apparatusNIKON CORP·Filed 1993·Granted May 16, 1995·104 cites·24 claims
- 1291US8377300B2Fluid separation element, anti-telescoping device for fluid separation element, and fluid separation deviceTORAY INDUSTRIES·Filed 2010·Granted Feb 19, 2013·19 cites·8 claims
- 1391US6102510ARecording head system for ink jet recording apparatus and method for driving the sameCANON KK·Filed 1992·Granted Aug 15, 2000·83 cites·22 claims
- 1491US5723243AElectrophotographic photoconductor and aromatic polycarbonate resin for use thereinRICOH KK·Filed 1996·Granted Mar 3, 1998·57 cites·44 claims
- 1591US5587754ACamera with guiding of rectilinear lens movementNIKON CORP·Filed 1995·Granted Dec 24, 1996·77 cites·2 claims
- 1691US5463443ACamera for preventing camera shakeNIKON CORP·Filed 1994·Granted Oct 31, 1995·90 cites·124 claims
- 1789US6018014AAromatic polycarbonate and electrophotographic photosensitive medium using sameRICOH KK·Filed 1998·Granted Jan 25, 2000·41 cites·9 claims
- 1889US5537185ACamera-shake display deviceNIKON CORP·Filed 1995·Granted Jul 16, 1996·26 cites·32 claims
- 1989US5402197ACamera shake alarming apparatusNIKON CORP·Filed 1993·Granted Mar 28, 1995·33 cites·5 claims
- 2089US5172134AInk jet recording head, driving method for same and ink jet recording apparatusCANON KK·Filed 1990·Granted Dec 15, 1992·68 cites·18 claims
- 2189US4752796AStill cameraNIPPON KOGAKU KK·Filed 1986·Granted Jun 21, 1988·30 cites·8 claims
- 2288US5617122ARecording apparatus and method for controlling recording head driving timingCANON KK·Filed 1993·Granted Apr 1, 1997·89 cites·26 claims
- 2387US6045959AElectrophotographic photoconductor and aromatic polycarbonate resin for use thereinRICOH KK·Filed 1998·Granted Apr 4, 2000·39 cites·12 claims
- 2487US4716421ARecording apparatusCANON KK·Filed 1986·Granted Dec 29, 1987·42 cites·15 claims
- 2585US9222710B2Heat-pump automotive air conditioner and defrosting method of the heat-pump automotive air conditionerKATAYAMA AKIRA·Filed 2011·Granted Dec 29, 2015·6 cites·10 claims
- 2685US5913081AAntivibration device having shielding member to prevent influx of damaging materialNIKON CORP·Filed 1997·Granted Jun 15, 1999·23 cites·2 claims
- 2784US8997503B2Vehicle air-conditioning system and operation control method thereforMORISITA MASATOSI·Filed 2010·Granted Apr 7, 2015·13 cites·19 claims
- 2884US5953544ACamera having an image blur suppression deviceNIKON CORP·Filed 1997·Granted Sep 14, 1999·15 cites·4 claims
- 2984US5576787ACamera having an image blur suppression deviceNIKON CORP·Filed 1995·Granted Nov 19, 1996·16 cites·16 claims
- 3084US5335042ACamera with a motion compensation deviceNIKON CORP·Filed 1993·Granted Aug 2, 1994·24 cites·22 claims
- 3184US5043748ARecording apparatusCANON KK·Filed 1990·Granted Aug 27, 1991·83 cites·9 claims
- 3283US11908518B2Memory systemKIOXIA CORP·Filed 2022·Granted Feb 20, 2024·1 cites·11 claims
- 3383US9824736B1Memory deviceTOSHIBA MEMORY CORP·Filed 2017·Granted Nov 21, 2017·6 cites·15 claims
- 3483US9001559B2Resistance change memoryTAKAHASHI MASAHIRO·Filed 2013·Granted Apr 7, 2015·7 cites·20 claims
- 3583US5761936ACylindrical lever-type door lockMIWA LOCK KK·Filed 1996·Granted Jun 9, 1998·58 cites·7 claims
- 3683US5281980AInk jet recording headCANON KK·Filed 1992·Granted Jan 25, 1994·47 cites·5 claims
- 3782US12406727B2Memory deviceKIOXIA CORP·Filed 2023·Granted Sep 2, 2025·1 cites·20 claims
- 3882US8711632B2Semiconductor memory deviceKATAYAMA AKIRA·Filed 2012·Granted Apr 29, 2014·8 cites·19 claims
- 3982US6330398B1Vibration reduction apparatusNIKON CORP·Filed 1997·Granted Dec 11, 2001·20 cites·11 claims
- 4082US5357268AInk jet recording head in which the ejection elements are driven in blocksCANON KK·Filed 1992·Granted Oct 18, 1994·38 cites·17 claims
- 4182US4657366AShutter device for cameraNIPPON KOGAKU KK·Filed 1986·Granted Apr 14, 1987·20 cites·10 claims
- 4281US6130310AElectrophotographic photoconductor and aromatic polycarbonate resin for use thereinRICOH KK·Filed 1999·Granted Oct 10, 2000·28 cites·12 claims
- 4381US5353051ARecording apparatus having a plurality of recording elements divided into blocksCANON KK·Filed 1992·Granted Oct 4, 1994·43 cites·12 claims
- 4480US6128035AAnti-blur image pickup deviceNIKON CORP·Filed 1997·Granted Oct 3, 2000·64 cites·18 claims
- 4580US5771404AShake preventing apparatus in cameraNIKON CORP·Filed 1997·Granted Jun 23, 1998·16 cites·2 claims
- 4680US5752091ACamera having animage blur suppression deviceNIKON CORP·Filed 1997·Granted May 12, 1998·12 cites·2 claims
- 4778US7630229B2Semiconductor memory deviceTOSHIBA KK·Filed 2007·Granted Dec 8, 2009·11 cites·15 claims
- 4878US5864722AVibration preventing cameraNIKON CORP·Filed 1997·Granted Jan 26, 1999·15 cites·23 claims
- 4977US5773112ALabel with a metallic layer of controlled thicknessLINTEC CORP·Filed 1997·Granted Jun 30, 1998·44 cites·13 claims
- 5077US5532785ACamera having means for correcting shutter time by measuring the actual exposure timeNIKON CORP·Filed 1994·Granted Jul 2, 1996·17 cites·32 claims
Showing the top 50 of 151 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →