Inventor
KAWASAKI RYOICHI
42 patents
⚠️ This page may combine multiple inventors who share the name “KAWASAKI RYOICHI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
SANYO ELECTRIC CO
25 patentsUS8363526B2Jan 29, 2013
Optical pickup apparatus
SANYO ELECTRIC CO27 citations92
US4845699AJul 4, 1989
Electric mechanical transducer and optical type pickup apparatus driven by a magnetic field
SANYO ELECTRIC CO38 citations91
US4811320AMar 7, 1989
Optical type pickup apparatus with lens holder supported by frame wires each having an end inserted into a frame hole
SANYO ELECTRIC CO40 citations91
US4767921AAug 30, 1988
Optical pickup device wherein the astigmatic converged beam spot is aligned along the dividing lines of the four-division photo-detector
SANYO ELECTRIC CO21 citations79
US4129195ADec 12, 1978
Diaphragm for speaker
SANYO ELECTRIC CO16 citations72
US4128138ADec 5, 1978
Diaphragm for speaker
SANYO ELECTRIC CO7 citations72
US5136565AAug 4, 1992
Optical device for reading and writing data on a recording medium
SANYO ELECTRIC CO15 citations71
US8054731B2Nov 8, 2011
Photodetector and optical pickup apparatus
SANYO ELECTRIC CO6 citations63
US7921437B2Apr 5, 2011
Optical pick apparatus
SANYO ELECTRIC CO2 citations63
US7457055B2Nov 25, 2008
Lens driving apparatus and optical pickup unit having the same
SANYO ELECTRIC CO3 citations63
US8369193B2Feb 5, 2013
Optical pickup apparatus and manufacturing method of optical pickup apparatus
SANYO ELECTRIC CO2 citations62
US7820959B2Oct 26, 2010
Photodetector including enhanced light receiving portion
SANYO ELECTRIC CO2 citations57
US7898929B2Mar 1, 2011
Objective lens, and method of manufacturing the same and optical pickup apparatus
SANYO ELECTRIC CO0 citations52
US7796475B2Sep 14, 2010
Optical pickup apparatus
SANYO ELECTRIC CO0 citations52
US7515361B2Apr 7, 2009
Lens holder and optical pickup apparatus having the same
SANYO ELECTRIC CO0 citations52
US8363533B2Jan 29, 2013
Optical pickup apparatus
SANYO ELECTRIC CO0 citations51
US7848186B2Dec 7, 2010
Objective lens and method of manufacturing optical pickup apparatus
SANYO ELECTRIC CO0 citations42
US7778119B2Aug 17, 2010
Objective lens holding device and optical pickup apparatus
SANYO ELECTRIC CO0 citations42
US8385180B2Feb 26, 2013
Optical pickup apparatus
SANYO ELECTRIC CO0 citations41
US8345529B2Jan 1, 2013
Optical pickup apparatus with astigmatism correcting collimating lens
SANYO ELECTRIC CO0 citations41
US8045428B2Oct 25, 2011
Optical pickup apparatus
SANYO ELECTRIC CO0 citations41
US7957234B2Jun 7, 2011
Optical pickup apparatus
SANYO ELECTRIC CO0 citations41
US7952980B2May 31, 2011
Optical pickup apparatus
SANYO ELECTRIC CO0 citations41
US7898910B2Mar 1, 2011
Optical pickup apparatus
SANYO ELECTRIC CO0 citations41
US7898919B2Mar 1, 2011
Optical pickup apparatus
SANYO ELECTRIC CO0 citations31
HOTTA TOHRU
11 patentsUS8081553B2Dec 20, 2011
Optical pickup apparatus
HOTTA TOHRU2 citations62
US8223614B2Jul 17, 2012
Method of manufacturing synthetic resin lens, method of manufacturing reformed synthetic resin material and optical pickup apparatus
HOTTA TOHRU0 citations51
US8184519B2May 22, 2012
Optical pickup apparatus
HOTTA TOHRU1 citations51
US8154978B2Apr 10, 2012
Optical pickup apparatus
HOTTA TOHRU1 citations50
US8339922B2Dec 25, 2012
Optical pickup apparatus
HOTTA TOHRU1 citations46
US8427924B2Apr 23, 2013
Optical pickup apparatus
HOTTA TOHRU0 citations41
US8305868B2Nov 6, 2012
Optical pickup apparatus
HOTTA TOHRU0 citations41
US8264939B2Sep 11, 2012
Optical pickup apparatus
HOTTA TOHRU0 citations41
US8213286B2Jul 3, 2012
Photodetector and optical pickup apparatus including the same
HOTTA TOHRU0 citations41
US8203926B2Jun 19, 2012
Optical pickup apparatus
HOTTA TOHRU0 citations41
US8179770B2May 15, 2012
Optical pickup apparatus
HOTTA TOHRU0 citations37
KAWASAKI RYOICHI
5 patentsUS8087037B2Dec 27, 2011
Optical pickup apparatus
KAWASAKI RYOICHI1 citations50
US8077587B2Dec 13, 2011
Laser attachment device and optical pick-up device using the same
KAWASAKI RYOICHI0 citations50
US8427921B2Apr 23, 2013
Light emitting device, optical pickup apparatus and method for manufacturing the same
KAWASAKI RYOICHI0 citations39
US8165002B2Apr 24, 2012
Optical pickup apparatus and objective lens
KAWASAKI RYOICHI0 citations39
US8149677B2Apr 3, 2012
Optical pickup unit and optical disk apparatus having a phase-differing periodic structure
KAWASAKI RYOICHI0 citations31