P

Inventor

YAMAMOTO KAZUHISA

JP226 patents
⚠️ This page may combine multiple inventors who share the name “YAMAMOTO KAZUHISA”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD

30 patents
US6631231B2Oct 7, 2003

Optical waveguide elements, optical wavelength conversion elements, and process for producing optical waveguide elements

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD57 citations96
US6590915B1Jul 8, 2003

Optical apparatus and method for producing the same

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD35 citations96
US6392979B1May 21, 2002

Optical pickup and optical disk apparatus using the same

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD56 citations96
US6115345ASep 5, 2000

Super-resolution optical head apparatus

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD46 citations96
US6067393AMay 23, 2000

Optical apparatus and method for producing the same

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD28 citations96
US6002515ADec 14, 1999

Method for producing polarization inversion part, optical wavelength conversion element using the same, and optical waveguide

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD75 citations96
US5936985AAug 10, 1999

Method for stabilizing output of higher harmonic waves and short wavelength laser beam source using the same

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD54 citations96
US5835650ANov 10, 1998

Optical apparatus and method for producing the same

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD47 citations96
US5652674AJul 29, 1997

Method for manufacturing domain-inverted region, optical wavelength conversion device utilizing such domain-inverted region and method for fabricating such device

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD68 citations96
US5452312ASep 19, 1995

Short-wavelength laser light source and optical information processing aparatus

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD61 citations96
US7271962B2Sep 18, 2007

Two-dimensional image formation apparatus

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD30 citations93
US7133428B2Nov 7, 2006

Optical apparatus and method for producing the same

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD14 citations93
US6958967B2Oct 25, 2005

Holographic optical information recording/reproducing device

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD21 citations93
US6819646B1Nov 16, 2004

Optical pickup, optical information recording/reproducing apparatus using the same, and phase variable wave plate used in the pickup and the apparatus

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD31 citations93
US6711183B1Mar 23, 2004

Optical wavelength conversion device, coherent light generator, and optical information processing apparatus

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD31 citations93
US6693936B2Feb 17, 2004

Wavelength-variable semiconductor laser, optical integrated device utilizing the same, and production method thereof

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD28 citations93
US6501868B1Dec 31, 2002

Optical waveguide device, coherent light source, integrated unit, and optical pickup

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD21 citations93
US6496299B2Dec 17, 2002

Method for stabilizing output of higher harmonic waves and short wavelength laser beam source using the same

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD14 citations93
US6353495B1Mar 5, 2002

Method for forming a ferroelectric domain-inverted structure

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD44 citations93
US6333943B1Dec 25, 2001

Optical device, laser beam source, laser apparatus and method of producing optical device

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD15 citations93
US6323990B1Nov 27, 2001

Method for stabilizing output of higher harmonic waves and short wavelength laser beam source using the same

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD22 citations93
US6317546B1Nov 13, 2001

Optical waveguide device, and light source device and optical apparatus including the optical waveguide device

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD19 citations93
US6298075B1Oct 2, 2001

Optical apparatus and method for producing the same

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD22 citations93
US6261858B1Jul 17, 2001

Wavelength-variable semiconductor laser, optical integrated device utilizing the same, and production method thereof

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD18 citations93
US6185168B1Feb 6, 2001

Super-resolution optical head apparatus

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD26 citations93
US6069904AMay 30, 2000

Optical apparatus and method for producing the same

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD21 citations93
US5619369AApr 8, 1997

Diffracting device having distributed bragg reflector and wavelength changing device having optical waveguide with periodically inverted-polarization layers

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD54 citations93
US5387998AFeb 7, 1995

Shorter wavelength light generating apparatus in which coherent light is converted into shorter wavelength light

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD33 citations93
US5373519ADec 13, 1994

Semiconductor laser device, an optical device and a method of producing the same

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD31 citations93
US5303247AApr 12, 1994

Optical harmonic generating device for generating harmonic wave from fundamental wave and shorter wavelength laser generating apparatus in which fundamental wave of laser is converted to harmonic wave with the device

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD29 citations93

PANASONIC CORP

7 patents

HONDA MOTOR CO LTD

6 patents

MIZUSHIMA TETSURO

2 patents

MAZDA MOTOR

2 patents

YOKOGAWA ELECTRIC CORP

1 patent

FUJITSU LTD

1 patent

NGK INSULATORS LTD

1 patent

Showing the top 50 of 226 patents by PatentIndex Score.