Inventor · disambiguated record
Ryoichi Kawasaki
Also filed as: KAWASAKI RYOICHI
42 granted patents·12 pending applications·185 citations·filing 1976–2012
96Inventor score
Files withSANYO ELECTRIC CO34HOTTA TOHRU12KAWASAKI RYOICHI5SANYO OPTEC DESIGN CO LTD2HASHIMOTO MITSUHIRO1
Top patents by PatentIndex Score
54 records- 0193US8363526B2Optical pickup apparatusSANYO ELECTRIC CO·Filed 2010·Granted Jan 29, 2013·27 cites·4 claims
- 0288US4811320AOptical type pickup apparatus with lens holder supported by frame wires each having an end inserted into a frame holeSANYO ELECTRIC CO·Filed 1987·Granted Mar 7, 1989·40 cites·3 claims
- 0387US4845699AElectric mechanical transducer and optical type pickup apparatus driven by a magnetic fieldSANYO ELECTRIC CO·Filed 1987·Granted Jul 4, 1989·38 cites·3 claims
- 0485US8054731B2Photodetector and optical pickup apparatusSANYO ELECTRIC CO·Filed 2007·Granted Nov 8, 2011·6 cites·13 claims
- 0577US7457055B2Lens driving apparatus and optical pickup unit having the sameSANYO ELECTRIC CO·Filed 2007·Granted Nov 25, 2008·3 cites·9 claims
- 0675US7921437B2Optical pick apparatusSANYO ELECTRIC CO·Filed 2007·Granted Apr 5, 2011·2 cites·4 claims
- 0773US8081553B2Optical pickup apparatusHOTTA TOHRU·Filed 2008·Granted Dec 20, 2011·2 cites·26 claims
- 0873US4767921AOptical pickup device wherein the astigmatic converged beam spot is aligned along the dividing lines of the four-division photo-detectorSANYO ELECTRIC CO·Filed 1987·Granted Aug 30, 1988·21 cites·4 claims
- 0970US8184519B2Optical pickup apparatusHOTTA TOHRU·Filed 2009·Granted May 22, 2012·1 cites·8 claims
- 1068US8154978B2Optical pickup apparatusHOTTA TOHRU·Filed 2008·Granted Apr 10, 2012·1 cites·4 claims
- 1165US7820959B2Photodetector including enhanced light receiving portionSANYO ELECTRIC CO·Filed 2007·Granted Oct 26, 2010·2 cites·4 claims
- 1265US5136565AOptical device for reading and writing data on a recording mediumSANYO ELECTRIC CO·Filed 1989·Granted Aug 4, 1992·15 cites·6 claims
- 1364US8369193B2Optical pickup apparatus and manufacturing method of optical pickup apparatusSANYO ELECTRIC CO·Filed 2010·Granted Feb 5, 2013·2 cites·14 claims
- 1464US8087037B2Optical pickup apparatusKAWASAKI RYOICHI·Filed 2011·Granted Dec 27, 2011·1 cites·6 claims
- 1564US4129195ADiaphragm for speakerSANYO ELECTRIC CO·Filed 1977·Granted Dec 12, 1978·16 cites·10 claims
- 1663US8339922B2Optical pickup apparatusHOTTA TOHRU·Filed 2009·Granted Dec 25, 2012·1 cites·6 claims
- 1763US8223614B2Method of manufacturing synthetic resin lens, method of manufacturing reformed synthetic resin material and optical pickup apparatusHOTTA TOHRU·Filed 2009·Granted Jul 17, 2012·0 cites·24 claims
- 1862US7898929B2Objective lens, and method of manufacturing the same and optical pickup apparatusSANYO ELECTRIC CO·Filed 2008·Granted Mar 1, 2011·0 cites·18 claims
- 1958US7796475B2Optical pickup apparatusSANYO ELECTRIC CO·Filed 2008·Granted Sep 14, 2010·0 cites·10 claims
- 2058US7515361B2Lens holder and optical pickup apparatus having the sameSANYO ELECTRIC CO·Filed 2007·Granted Apr 7, 2009·0 cites·9 claims
- 2157US7957234B2Optical pickup apparatusSANYO ELECTRIC CO·Filed 2009·Granted Jun 7, 2011·0 cites·6 claims
- 2257US7952980B2Optical pickup apparatusSANYO ELECTRIC CO·Filed 2009·Granted May 31, 2011·0 cites·6 claims
- 2357US7898910B2Optical pickup apparatusSANYO ELECTRIC CO·Filed 2008·Granted Mar 1, 2011·0 cites·14 claims
- 2456US8429681B2Optical disc apparatus which includes an optical pickup apparatus that includes an optical member driving apparatusHASHIMOTO MITSUHIRO·Filed 2008·Granted Apr 23, 2013·0 cites·10 claims
- 2556US8385180B2Optical pickup apparatusSANYO ELECTRIC CO·Filed 2009·Granted Feb 26, 2013·0 cites·6 claims
- 2655US8045428B2Optical pickup apparatusSANYO ELECTRIC CO·Filed 2008·Granted Oct 25, 2011·0 cites·3 claims
- 2753US8305868B2Optical pickup apparatusHOTTA TOHRU·Filed 2008·Granted Nov 6, 2012·0 cites·3 claims
- 2853US8213286B2Photodetector and optical pickup apparatus including the sameHOTTA TOHRU·Filed 2008·Granted Jul 3, 2012·0 cites·2 claims
- 2953US2009245073A1Optical pickup apparatusSANYO ELECTRIC CO·Filed 2009·Application pending·0 cites
- 3052US8179770B2Optical pickup apparatusHOTTA TOHRU·Filed 2008·Granted May 15, 2012·0 cites·16 claims
- 3152US7848186B2Objective lens and method of manufacturing optical pickup apparatusSANYO ELECTRIC CO·Filed 2007·Granted Dec 7, 2010·0 cites·3 claims
- 3252US2008267043A1Optical pickup having optical path length correction functionSANYO ELECTRIC CO·Filed 2007·Application pending·0 cites
- 3351US8363533B2Optical pickup apparatusSANYO ELECTRIC CO·Filed 2012·Granted Jan 29, 2013·0 cites·1 claims
- 3451US2012201109A1Optical Pickup ApparatusHOTTA TOHRU·Filed 2012·Application pending·0 cites
- 3550US8427921B2Light emitting device, optical pickup apparatus and method for manufacturing the sameKAWASAKI RYOICHI·Filed 2012·Granted Apr 23, 2013·0 cites·5 claims
- 3650US7778119B2Objective lens holding device and optical pickup apparatusSANYO ELECTRIC CO·Filed 2007·Granted Aug 17, 2010·0 cites·8 claims
- 3749US2011170396A1Light emitting device, optical pickup apparatus and method for manufacturing the sameSANYO ELECTRIC CO·Filed 2011·Application pending·0 cites
- 3849US2008074983A1Optical Pickup DeviceSANYO ELECTRIC CO·Filed 2007·Application pending·0 cites
- 3944US4128138ADiaphragm for speakerSANYO ELECTRIC CO·Filed 1976·Granted Dec 5, 1978·7 cites·8 claims
- 4043US8264939B2Optical pickup apparatusHOTTA TOHRU·Filed 2010·Granted Sep 11, 2012·0 cites·4 claims
- 4143US8077587B2Laser attachment device and optical pick-up device using the sameKAWASAKI RYOICHI·Filed 2011·Granted Dec 13, 2011·0 cites·6 claims
- 4242US2008225675A1Optical disk apparatusSANYO OPTEC DESIGN CO LTD·Filed 2007·Application pending·0 cites
- 4341US8345529B2Optical pickup apparatus with astigmatism correcting collimating lensSANYO ELECTRIC CO·Filed 2011·Granted Jan 1, 2013·0 cites·10 claims
- 4441US7898919B2Optical pickup apparatusSANYO ELECTRIC CO·Filed 2007·Granted Mar 1, 2011·0 cites·6 claims
- 4540US8165002B2Optical pickup apparatus and objective lensKAWASAKI RYOICHI·Filed 2010·Granted Apr 24, 2012·0 cites·14 claims
- 4640US2011205878A1Laser attachment device and optical pick-up device using the sameSANYO ELECTRIC CO·Filed 2011·Application pending·0 cites
- 4740US2011214137A1Lens holder and optical pickup apparatus using the sameSANYO ELECTRIC CO·Filed 2011·Application pending·0 cites
- 4839US8427924B2Optical pickup apparatusHOTTA TOHRU·Filed 2010·Granted Apr 23, 2013·0 cites·5 claims
- 4939US8149677B2Optical pickup unit and optical disk apparatus having a phase-differing periodic structureKAWASAKI RYOICHI·Filed 2006·Granted Apr 3, 2012·0 cites·18 claims
- 5039US2011182167A1Optical pickup device and method for manufacturing the sameSANYO ELECTRIC CO·Filed 2011·Application pending·0 cites
Showing the top 50 of 54 patent records by PatentIndex Score.
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