Inventor · disambiguated record
Tsutomu Maruyama
Also filed as: MARUYAMA TSUTOMU
38 granted patents·17 pending applications·571 citations·filing 1970–2023
97Inventor score
Top patents by PatentIndex Score
55 records- 0196US5547501AMethod for formation of invisible marking and method for reading of invisible markingKANSAI PAINT CO LTD·Filed 1995·Granted Aug 20, 1996·159 cites·18 claims
- 0292US12284455B2Optical measurement device and optical measurement systemSONY GROUP CORP·Filed 2020·Granted Apr 22, 2025·2 cites·10 claims
- 0387US6421314B1Semiconductor laser drive device, optical head, optical disk device and optical disk recording and reproducing methodSONY CORP·Filed 1999·Granted Jul 16, 2002·51 cites·16 claims
- 0478US8416671B2Recording apparatusFUJITA GORO·Filed 2011·Granted Apr 9, 2013·4 cites·4 claims
- 0578US5686725AMethod for reading of invisible markingKANSAI PAINT CO LTD·Filed 1995·Granted Nov 11, 1997·68 cites·15 claims
- 0673US7539108B2Optical information reproduction apparatus and optical information reproduction methodSONY CORP·Filed 2005·Granted May 26, 2009·2 cites·4 claims
- 0773US4670880AMethod of error detection and correction by majorityIBM·Filed 1985·Granted Jun 2, 1987·61 cites·2 claims
- 0872US8537647B2Recording apparatusFUJITA GORO·Filed 2011·Granted Sep 17, 2013·2 cites·4 claims
- 0972US7126899B2Optical recording medium processing device and focal point control method thereofSONY CORP·Filed 2003·Granted Oct 24, 2006·8 cites·1 claims
- 1069US8462599B2Optical oscillation device and recording apparatusFUJITA GORO·Filed 2012·Granted Jun 11, 2013·2 cites·4 claims
- 1169US7691207B2Method for cleaning disk-shape glass substrate and magnetic diskASAHI GLASS CO LTD·Filed 2006·Granted Apr 6, 2010·2 cites·11 claims
- 1266US7301875B2Information recording device and information recording methodSONY CORP·Filed 2004·Granted Nov 27, 2007·6 cites·10 claims
- 1365US6654323B2Method of tracking servo for optical pickup deviceSONY CORP·Filed 2001·Granted Nov 25, 2003·6 cites·8 claims
- 1465US4453962AMethod of manufacturing a flexible optical fiber bundleFUJI PHOTO OPTICAL CO LTD·Filed 1982·Granted Jun 12, 1984·15 cites·2 claims
- 1564US4937089ATextured proteinaceous foodKIBUN KK·Filed 1988·Granted Jun 26, 1990·21 cites·6 claims
- 1663US8406261B2Laser driving device and laser driving methodFUJITA GORO·Filed 2010·Granted Mar 26, 2013·1 cites·4 claims
- 1763US7978792B2Reproducing apparatus and method, signal processing apparatus and method, and programSONY CORP·Filed 2007·Granted Jul 12, 2011·2 cites·7 claims
- 1859US5332769AElectron radiation curing type adhesive and polyester film laminated metal plate thereofDAIWA CAN CO LTD·Filed 1993·Granted Jul 26, 1994·29 cites·9 claims
- 1959US4710216AMethod of making flexible optical fiber bundleFUJI PHOTO OPTICAL CO LTD·Filed 1985·Granted Dec 1, 1987·15 cites·5 claims
- 2058US2024319069A1Particle sorting apparatus and particle sorting methodSONY GROUP CORP·Filed 2022·Application pending·0 cites
- 2157US8902942B2Laser apparatus and bio-imaging apparatusSONY CORP·Filed 2013·Granted Dec 2, 2014·0 cites·5 claims
- 2257US7413496B2Method and device for polishing endless belt metal rings for continuously variable transmissionHONDA MOTOR CO LTD·Filed 2004·Granted Aug 19, 2008·8 cites·21 claims
- 2357US2023375459A1Particle detection device, particle detection system, and particle detection methodSONY GROUP CORP·Filed 2021·Application pending·0 cites
- 2457US2025085208A9Particle isolation device, particle isolation method, and programSONY GROUP CORP·Filed 2022·Application pending·0 cites
- 2556US2025137910A1Particle sorting device, orifice unit for particle sorting device, and particle sorting methodSONY GROUP CORP·Filed 2022·Application pending·0 cites
- 2653US3936368AMethod for curing a coating filmKANSAI PAINT CO LTD·Filed 1970·Granted Feb 3, 1976·6 cites·10 claims
- 2752US2022244164A1Optical measuring device and optical measuring systemSONY GROUP CORP·Filed 2020·Application pending·0 cites
- 2851US4965463AFlat frequency, constant voltage power source deviceSANYO ELECTRIC CO·Filed 1989·Granted Oct 23, 1990·22 cites·2 claims
- 2950US4588601AMethod of producing paste product like lobster's meatKIBUN KK·Filed 1985·Granted May 13, 1986·15 cites·6 claims
- 3050US2025214258A1Robot system, processing method, and recording mediumNEC CORP·Filed 2022·Application pending·0 cites
- 3149US2025196324A1Robot system, processing method, and recording mediumNEC CORP·Filed 2022·Application pending·0 cites
- 3249US2025363393A1Processing device, processing system, processing method, and recording mediumNEC CORP·Filed 2022·Application pending·0 cites
- 3349US2025196331A1Robot system, processing method, and recording mediumNEC CORP·Filed 2022·Application pending·0 cites
- 3448US7099243B2Optical pickup apparatus, optical disc apparatus, and tracking control method thereofSONY CORP·Filed 2002·Granted Aug 29, 2006·1 cites·3 claims
- 3548US5294519AProcess for preparing printed-circuit boardKANSAI PAINT CO LTD·Filed 1993·Granted Mar 15, 1994·18 cites·10 claims
- 3648US2025214239A1Robot system, processing method, and recording mediumNEC CORP·Filed 2022·Application pending·0 cites
- 3748US2025296231A1Robot system, control method, and recording mediumNEC CORP·Filed 2022·Application pending·0 cites
- 3848US2024140732A1Control device, control method, and recording mediumNEC CORP·Filed 2023·Application pending·0 cites
- 3947US9254762B2Seat structure for vehicleMAZDA MOTOR·Filed 2014·Granted Feb 9, 2016·1 cites·10 claims
- 4046US8934324B2Light source and recording apparatusSONY CORP·Filed 2013·Granted Jan 13, 2015·0 cites·2 claims
- 4145US4894317AMethod of forming a printed circuit and the printed circuit formed therefromKANSAI PAINT CO LTD·Filed 1988·Granted Jan 16, 1990·13 cites·3 claims
- 4245US4882209AGlass capillary tube and method for its productionASAHI GLASS CO LTD·Filed 1987·Granted Nov 21, 1989·10 cites·2 claims
- 4343US11959768B2Guidance control device and guidance control methodNEC CORP·Filed 2019·Granted Apr 16, 2024·0 cites·11 claims
- 4443US2013021425A1Optical oscillation device and recording apparatusSONY CORP·Filed 2012·Application pending·0 cites
- 4543US2015131425A9Optical oscillation device and recording apparatusFUJITA GORO·Filed 2012·Application pending·0 cites
- 4640US8218592B2Laser device, optical pickup, and optical disk deviceMARUYAMA TSUTOMU·Filed 2011·Granted Jul 10, 2012·0 cites·3 claims
- 4740US5605740AActinic radiation-curable colored coating composition for use in vacuum-forming film, vacuum-forming film and vacuum-formed productKANSAI PAINT CO LTD·Filed 1995·Granted Feb 25, 1997·8 cites·1 claims
- 4839US4965073AProcess for preparing the printed-circuit boards using a photosensitive composition containing a reduction type leico pigmentKANSAI PAINT CO LTD·Filed 1990·Granted Oct 23, 1990·6 cites·5 claims
- 4939US2002016418A1Curable coating compositions and methods of forming coating filmsFiled 2001·Application pending·0 cites
- 5039US2003176584A1Curable coating compositions of alkoxylsilyl group containing polymersFiled 2003·Application pending·0 cites
Showing the top 50 of 55 patent records by PatentIndex Score.
Join the waitlist — get patent alerts
Get an alert when Tsutomu Maruyama 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 →