Inventor
YOKOYAMA TOSHIFUMI
JP30 patents
⚠️ This page may combine multiple inventors who share the name “YOKOYAMA TOSHIFUMI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
DAINIPPON PRINTING CO LTD
10 patentsUS5723234AMar 3, 1998
Phase shift photomask and phase shift photomask dry etching method
DAINIPPON PRINTING CO LTD53 citations96
US5811208ASep 22, 1998
Phase shift mask and method of producing the same
DAINIPPON PRINTING CO LTD24 citations91
US6599667B2Jul 29, 2003
Halftone phase shift photomask and blank for halftone phase shift photomask
DAINIPPON PRINTING CO LTD41 citations90
US5965301AOct 12, 1999
Method for repairing photomask by removing residual defect in said photomask
DAINIPPON PRINTING CO LTD37 citations89
US6869736B2Mar 22, 2005
Halftone phase shift photomask and blank for halftone phase shift photomask
DAINIPPON PRINTING CO LTD15 citations82
US5972543AOct 26, 1999
Phase shift mask and method of producing the same
DAINIPPON PRINTING CO LTD11 citations72
US6764792B1Jul 20, 2004
Halftone phase shift photomask and blanks for halftone phase shift photomask for producing it
DAINIPPON PRINTING CO LTD8 citations71
US6458496B2Oct 1, 2002
Blank for halftone phase shift photomask and halftone phase shift photomask
DAINIPPON PRINTING CO LTD12 citations71
US6979408B2Dec 27, 2005
Method and apparatus for photomask fabrication
DAINIPPON PRINTING CO LTD2 citations62
US6740455B2May 25, 2004
Photomask
DAINIPPON PRINTING CO LTD5 citations61
PANASONIC CORP
8 patentsUS8350789B2Jan 8, 2013
Image display apparatus
PANASONIC CORP21 citations93
US7593159B2Sep 22, 2009
Display device
PANASONIC CORP42 citations92
US7907646B2Mar 15, 2011
Laser light source and display device
PANASONIC CORP13 citations84
US7922336B2Apr 12, 2011
Light source device for display device, display device, and method for adjusting image of display device
PANASONIC CORP3 citations63
US7866822B2Jan 11, 2011
Video projector using coherent light source
PANASONIC CORP4 citations63
US7593151B2Sep 22, 2009
Display unit and scanning method therefor
PANASONIC CORP2 citations63
US7830932B2Nov 9, 2010
Internal resonator type SHG light source
PANASONIC CORP0 citations42
US7494286B2Feb 24, 2009
Laser module and method for manufacturing the same
PANASONIC CORP0 citations42
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD
6 patentsUS6519077B1Feb 11, 2003
Optical waveguide, optical wavelength conversion device, method for producing the same, short wavelength light generation apparatus using the same, optical information processing apparatus using the same, coherent light generation apparatus using the same, and optical system using the same
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD13 citations84
US6614966B2Sep 2, 2003
Optical waveguide device integrated module and method of manufacturing the same
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD10 citations74
US6999668B2Feb 14, 2006
Method for manufacturing optical waveguide device, optical waveguide device, and coherent light source and optical apparatus using the optical waveguide device
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD5 citations63
US6621962B2Sep 16, 2003
Optical waveguide device integrated module and method of manufacturing the same
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD3 citations63
US7082146B2Jul 25, 2006
Device and method for inspecting wavelength-variable semiconductor laser, and method for inspecting coherent source
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD1 citations52
US7356056B2Apr 8, 2008
Coherent light source and control method thereof, and display unit and laser display using them
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD0 citations42