Inventor

KAMEI TOMOTADA

JP16 patents

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

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD

9 patents

US5781351AJul 14, 1998

Mounting structure of objective lens for optical pick-up used for optical disk device

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD117 citations98

US7227819B2Jun 5, 2007

Optical pick-up head, optical information apparatus, and optical information reproducing method

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD40 citations96

US6873588B1Mar 29, 2005

Converging element, optical head, and apparatus and method of optically recording and reproducing information

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD13 citations83

US7406012B2Jul 29, 2008

Semiconductor laser driving device, optical head device, optical information processing device, and optical recording medium

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD8 citations73

US7154838B2Dec 26, 2006

Optical detector, optical head device, optical information processing device, and optical information processing method

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD8 citations73

US7254107B2Aug 7, 2007

Optical head and optical recording and reproducing apparatus

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD6 citations63

US6643303B2Nov 4, 2003

Laser drive device, optical head, and optical information processor

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD6 citations63

US6920102B2Jul 19, 2005

Converging element, optical head, and apparatus and method of optically recording and reproducing information

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD2 citations62

US6859428B2Feb 22, 2005

Converging element, optical head, and apparatus and method of optically recording and reproducing information

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD4 citations62

PANASONIC CORP

7 patents

US7539090B2May 26, 2009

Optical pick-up head, optical information apparatus, and optical information reproducing method

PANASONIC CORP4 citations74

US7558162B2Jul 7, 2009

Optical pick-up head, optical information apparatus, and optical information reproducing method

PANASONIC CORP2 citations63

US7463561B2Dec 9, 2008

Optical pick-up head, optical information apparatus, and optical information reproducing method

PANASONIC CORP1 citations63

US7460448B2Dec 2, 2008

Optical pick-up head, optical information apparatus, and optical information reproducing method

PANASONIC CORP1 citations63

US7558170B2Jul 7, 2009

Optical pick-up head, optical information apparatus, and optical information reproducing method

PANASONIC CORP0 citations52

US7542382B2Jun 2, 2009

Optical pick-up head, optical information apparatus, and optical information reproducing method

PANASONIC CORP0 citations52

US7697400B2Apr 13, 2010

Optical pickup and optical disc device

PANASONIC CORP1 citations51