Inventor · disambiguated record
Yasufumi Yamada
Also filed as: YAMADA YASUFUMI
30 granted patents·3 pending applications·1,062 citations·filing 1975–2019
98Inventor score
Top patents by PatentIndex Score
33 records- 0197US4750799AHybrid optical integrated circuitNIPPON TELEGRAPH & TELEPHONE·Filed 1985·Granted Jun 14, 1988·202 cites·12 claims
- 0295US4735677AMethod for fabricating hybrid optical integrated circuitNIPPON TELEGRAPH & TELEPHONE·Filed 1987·Granted Apr 5, 1988·115 cites·15 claims
- 0394US4749897ADriving device for piezoelectric elementNIPPON DENSO CO·Filed 1987·Granted Jun 7, 1988·54 cites·5 claims
- 0490US6222967B1Packaging platform, optical module using the platform, and methods for producing the platform and the moduleNIPPON TELEGRAPH & TELEPHONE·Filed 1998·Granted Apr 24, 2001·110 cites·23 claims
- 0590US5036263APiezoelectric actuator driving apparatusNIPPON DENSO CO·Filed 1989·Granted Jul 30, 1991·49 cites·6 claims
- 0689US5621837AOpto-electronic hybrid integration platform, optical sub-module, opto-electronic hybrid integration circuit and process for fabricating platformNIPPON TELEGRAPH & TELEPHONE·Filed 1994·Granted Apr 15, 1997·86 cites·3 claims
- 0787US7343127B2Mark forming method for moving body and moving body having markRICOH KK·Filed 2005·Granted Mar 11, 2008·9 cites·12 claims
- 0887US6027254AOpto-electronic hybrid integration platform, optical sub-module, opto-electronic hybrid integration circuit, and process for fabricating platformNIPPON TELEGRAPH & TELEPHONE·Filed 1996·Granted Feb 22, 2000·77 cites·58 claims
- 0987US4021712AControl system for automatic transmission for electric automobilesTOYOTA MOTOR CO LTD·Filed 1975·Granted May 3, 1977·42 cites·6 claims
- 1084US7693662B2Drive recorder for vehicleDENSO CORP·Filed 2007·Granted Apr 6, 2010·22 cites·18 claims
- 1184US7518086B2Method and device for adjusting wavelength distribution pattern in laserRICOH KK·Filed 2005·Granted Apr 14, 2009·13 cites·11 claims
- 1283US6816178B2Method and apparatus for color image forming capable of performing a precise synchronization between toner image forming per color and its overlayingRICOH KK·Filed 2002·Granted Nov 9, 2004·24 cites·57 claims
- 1383US6480639B2Optical moduleNIPPON TELEGRAPH & TELEPHONE·Filed 1998·Granted Nov 12, 2002·62 cites·24 claims
- 1482US6803540B2Method and apparatus for processing three-dimensional structure, method for producing three-dimensional shape product and three-dimensional structureRICOH KK·Filed 2002·Granted Oct 12, 2004·19 cites·24 claims
- 1581US7067198B2Method and apparatus for processing three-dimensional structure, method for producing three-dimensional shape product and three-dimensional structureRIKEN·Filed 2003·Granted Jun 27, 2006·18 cites·4 claims
- 1678US7072566B2Ultrashort-pulse laser-working method and apparatus and structural bodies produced by using the sameRICOH KK·Filed 2004·Granted Jul 4, 2006·20 cites·37 claims
- 1778US6164836AOpto-electronic hybrid integration platform, optical sub-module, opto-electronic hybrid integration circuit, and process for fabricating platformFiled 1999·Granted Dec 26, 2000·43 cites·8 claims
- 1877US7679499B2Warning systemDENSO CORP·Filed 2007·Granted Mar 16, 2010·10 cites·12 claims
- 1976US7910869B2Laser processing apparatus using distinct horizontal and vertical data setsRICOH CO LTD·Filed 2005·Granted Mar 22, 2011·4 cites·18 claims
- 2073US11808855B2Optical device, range sensor using optical device, and mobile objectRICOH CO LTD·Filed 2019·Granted Nov 7, 2023·2 cites·19 claims
- 2173US5327517AGuided-wave circuit module and wave-guiding optical component equipped with the moduleNIPPON TELEGRAPH & TELEPHONE·Filed 1992·Granted Jul 5, 1994·40 cites·22 claims
- 2265US8760501B2Stereo camera apparatus and vehicle-mountable monitoring apparatus using sameOOHCHIDA SHIGERU·Filed 2010·Granted Jun 24, 2014·3 cites·11 claims
- 2365US8049138B2Method and apparatus for processing three-dimensional structure, method for producing three-dimensional shape product and three-dimensional structureRICOH CO LTD·Filed 2004·Granted Nov 1, 2011·10 cites·10 claims
- 2465US6949215B2Method for processing a three-dimensional structure by laserRIKEN·Filed 2003·Granted Sep 27, 2005·9 cites·13 claims
- 2561US7482052B2Method for processing by laser, apparatus for processing by laser, and three-dimensional structureRICOH KK·Filed 2005·Granted Jan 27, 2009·1 cites·9 claims
- 2658US6885823B2Wavelength multiplexing/demultiplexing unit, wavelength multiplexing/demultiplexing apparatus and wavelength multiplexing/demultiplexing methodNTT ELECTRONICS CORP·Filed 2003·Granted Apr 26, 2005·5 cites·21 claims
- 2756US9445062B2Imaging device, imaging system, and imaging methodSATOH NOBUYUKI·Filed 2014·Granted Sep 13, 2016·0 cites·14 claims
- 2856US7636633B2Car navigation systemDENSO CORP·Filed 2006·Granted Dec 22, 2009·1 cites·11 claims
- 2946US11579289B2Distance measuring apparatus and mobile body including the sameRICOH CO LTD·Filed 2019·Granted Feb 14, 2023·0 cites·9 claims
- 3046US5903697AOptical waveguide, method of making the same and integrated optical deviceHITACHI LTD·Filed 1997·Granted May 11, 1999·12 cites·17 claims
- 3145US2008305787A1System, vehicle unit and cellular phone for vehicular short range wireless communicationDENSO CORP·Filed 2008·Application pending·0 cites
- 3238US2001012424A1Wavelength multiplexing/demultiplexing unit, wavelength multiplexing/demultiplexing apparatus and wavelength multiplexing/demultiplexing methodFiled 2001·Application pending·0 cites
- 3335US2006002748A1Mark forming method, mark formed moving member and image forming apparatusKUDO KOICHI·Filed 2005·Application pending·0 cites
Join the waitlist — get patent alerts
Get an alert when Yasufumi 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 →