Inventor · disambiguated record
Katsuyuki Yamada
Also filed as: YAMADA KATSUYUKI
63 granted patents·10 pending applications·1,614 citations·filing 1981–2008
99Inventor score
Top patents by PatentIndex Score
73 records- 0199US6280684B1Sputtering target, method of producing the target, optical recording medium fabricated by using the sputtering target, and method of fabricating the optical recording mediumRICOH KK·Filed 2000·Granted Aug 28, 2001·320 cites·4 claims
- 0296US7075871B2Method and device for recording optical dataRICOH KK·Filed 2003·Granted Jul 11, 2006·56 cites·8 claims
- 0395US6280810B1Phase-change information recording medium and optical recording method to make higher rotation rates feasibleRICOH KK·Filed 1999·Granted Aug 28, 2001·131 cites·13 claims
- 0495US5974025AOptical recording medium and recording and reproducing method using the sameRICOH KK·Filed 1998·Granted Oct 26, 1999·109 cites·11 claims
- 0594US5024927AInformation recording mediumRICOH KK·Filed 1989·Granted Jun 18, 1991·53 cites·3 claims
- 0693US6827999B2Optical information recording mediumRICOH KK·Filed 2002·Granted Dec 7, 2004·29 cites·16 claims
- 0793US5080947AInformation recording mediumRICOH KK·Filed 1990·Granted Jan 14, 1992·61 cites·17 claims
- 0892US6445669B1Initialization of phase-change optical recording mediumRICOH KK·Filed 1999·Granted Sep 3, 2002·73 cites·13 claims
- 0992US5785828ASputtering target for producing optical recording mediumRICOH KK·Filed 1995·Granted Jul 28, 1998·54 cites·3 claims
- 1091US6503592B1Sputtering target, method of producing the target, optical recording medium fabricated by using the sputtering target, and method of fabricating the optical recording mediumRICOH KK·Filed 2001·Granted Jan 7, 2003·24 cites·17 claims
- 1190US7411887B2Optical information recording mediumRICOH KK·Filed 2006·Granted Aug 12, 2008·7 cites·7 claims
- 1290US5736657ASputtering targetRICOH KK·Filed 1996·Granted Apr 7, 1998·86 cites·2 claims
- 1390US5646924ARecording and simultaneous verifying method of phase-changing type of information recording mediumRICOH KK·Filed 1994·Granted Jul 8, 1997·54 cites·12 claims
- 1489US6319368B1Sputtering target, method of producing the target, optical recording medium fabricated by using the sputtering target, and method of forming recording layer for the optical recording mediumRICOH KK·Filed 1997·Granted Nov 20, 2001·46 cites·12 claims
- 1589US6127016ASputtering target, method of producing the target, optical recording medium fabricated by using the sputtering target, and method of fabricating the optical recording mediumRICOH KK·Filed 1997·Granted Oct 3, 2000·40 cites·16 claims
- 1688US6388978B1Optical recording method for a rewritable phase-change optical recording mediumRICOH KK·Filed 1999·Granted May 14, 2002·54 cites·13 claims
- 1788US6373802B1Method and apparatus for initializing optical recording mediaRICOH KK·Filed 1998·Granted Apr 16, 2002·34 cites·20 claims
- 1887US6757232B2Method of recording and reproducing information and apparatus for recording and reproducing information using the methodRICOH KK·Filed 2001·Granted Jun 29, 2004·21 cites·20 claims
- 1984US6652806B2Method of producing a sputtering targetRICOH KK·Filed 2001·Granted Nov 25, 2003·14 cites·4 claims
- 2084US5011723AOptical information recording mediumRICOH KK·Filed 1989·Granted Apr 30, 1991·52 cites·9 claims
- 2183US5100700AInformation recording mediumRICOH KK·Filed 1990·Granted Mar 31, 1992·54 cites·10 claims
- 2282US6886177B2Phase-change type optical information recording mediumRICOH KK·Filed 2001·Granted Apr 26, 2005·16 cites·12 claims
- 2379US7507523B2Optical information recording medium, method of manufacturing the optical information recording medium, and method of and apparatus for recording/reproducing optical informationRICOH KK·Filed 2001·Granted Mar 24, 2009·14 cites·33 claims
- 2479US7352680B2Optical recording medium having relation between reflection layer and pit lengthRICOH KK·Filed 2006·Granted Apr 1, 2008·3 cites·4 claims
- 2577US7570563B2Optical recording method of a phase-change optical recording medium having improved recording characteristics and uniformity and optical recording medium and optical recorder used by the methodRICOH KK·Filed 2006·Granted Aug 4, 2009·3 cites·9 claims
- 2677US7288224B2Method of producing a sputtering targetRICOH KK·Filed 2003·Granted Oct 30, 2007·8 cites·1 claims
- 2776US5319479ADeposited multi-layer device with a plastic substrate having an inorganic thin film layerRICOH KK·Filed 1991·Granted Jun 7, 1994·45 cites·11 claims
- 2874US5882493AHeat treated and sintered sputtering targetRICOH KK·Filed 1997·Granted Mar 16, 1999·25 cites·10 claims
- 2973US8000198B2Phase-change type optical recording medium and reproduction method and apparatus for such a recording mediumRICOH CO LTD·Filed 2006·Granted Aug 16, 2011·2 cites·7 claims
- 3073US7773478B2Optical recording medium, multi-layered optical recording medium, and optical recording method and recording apparatus using the sameRICOH KK·Filed 2006·Granted Aug 10, 2010·2 cites·16 claims
- 3172US7894315B2Optical disk, recording method, recording medium, and optical disk unit, for recording information on multilayer optical diskRICOH CO LTD·Filed 2006·Granted Feb 22, 2011·2 cites·8 claims
- 3272US7245580B2Optical recording medium having protective and/or adhesive layers, and method of manufactureRICOH KK·Filed 2003·Granted Jul 17, 2007·8 cites·33 claims
- 3372US6914866B2Optical information recording medium and information recording method and apparatus using the recording mediumRICOH KK·Filed 2002·Granted Jul 5, 2005·9 cites·12 claims
- 3469US7848196B2Power determining method, single-sided multilayer optical disk, recording method, computer program product, computer-readable medium, and optical disk apparatusRICOH CO LTD·Filed 2006·Granted Dec 7, 2010·1 cites·11 claims
- 3569US6580672B2Method and apparatus for initializing optical recording mediaRICOH KK·Filed 2002·Granted Jun 17, 2003·4 cites·6 claims
- 3668US8227067B2Optical recording medium, and sputtering target and method for producing the sameHAYASHI YOSHITAKA·Filed 2008·Granted Jul 24, 2012·1 cites·20 claims
- 3768US7068581B2Optical recording apparatus for recording addresses and having a non-consecutive part in which addresses may or may not be setRICOH KK·Filed 2001·Granted Jun 27, 2006·4 cites·19 claims
- 3865US6775213B2Method and apparatus for initializing optical recording mediaRICOH KK·Filed 2003·Granted Aug 10, 2004·3 cites·32 claims
- 3962US7351516B2Optical information recording mediumRICOH KK·Filed 2003·Granted Apr 1, 2008·4 cites·10 claims
- 4062US5674599ADeposited multi-layer deviceRICOH KK·Filed 1996·Granted Oct 7, 1997·27 cites·10 claims
- 4161US7072258B2Optical information recording medium, with at least one inconsecutive part, and recording apparatusRICOH KK·Filed 2003·Granted Jul 4, 2006·2 cites·7 claims
- 4260US7336583B2Optical information recording medium and recording apparatusRICOH KK·Filed 2006·Granted Feb 26, 2008·0 cites·1 claims
- 4360US6760291B2Method and apparatus for initializing optical recording mediaRICOH KK·Filed 2003·Granted Jul 6, 2004·2 cites·11 claims
- 4459US7539098B2Optical information recording medium and recording apparatusRICOH KK·Filed 2006·Granted May 26, 2009·0 cites·2 claims
- 4559US7063875B2Optical recording mediumRICOH KK·Filed 2003·Granted Jun 20, 2006·3 cites·25 claims
- 4659US5543945AMethod of driving an LCD employing combining two voltages which change polarity at different times in a frameRICOH KK·Filed 1994·Granted Aug 6, 1996·21 cites·6 claims
- 4758US7447138B2Method and apparatus for initializing optical recording mediaRICOH KK·Filed 2005·Granted Nov 4, 2008·0 cites·6 claims
- 4858US7414954B2Optical information recording mediumRICOH KK·Filed 2006·Granted Aug 19, 2008·0 cites·7 claims
- 4957US7496021B2Method and device for recording optical dataRICOH KK·Filed 2006·Granted Feb 24, 2009·0 cites·9 claims
- 5056US7440380B2Optical information recording medium and recording apparatusRICOH KK·Filed 2005·Granted Oct 21, 2008·0 cites·5 claims
Showing the top 50 of 73 patent records by PatentIndex Score.
Join the waitlist — get patent alerts
Get an alert when Katsuyuki Yamada 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 →