Inventor
OHTA TAKEO
JP31 patents
⚠️ This page may combine multiple inventors who share the name “OHTA TAKEO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD
28 patentsUS5194363AMar 16, 1993
Optical recording medium and production process for the medium
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD71 citations96
US3971874AJul 27, 1976
Optical information storage material and method of making it
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD83 citations95
US5681632AOct 28, 1997
Optical information recording medium
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD36 citations92
US5610879AMar 11, 1997
Optical reproducing device, optical reproducing method using the same, and optical record medium used in the same
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD24 citations92
US5191565AMar 2, 1993
Optical information recording medium
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD30 citations92
US4403318ASep 6, 1983
Apparatus and method for recording, reproducing and erasing on optical recording discs
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD50 citations92
US4278734AJul 14, 1981
Optical information recording material and method of recording and reproducing information using same material
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD37 citations92
US5230973AJul 27, 1993
Method of recording and erasing information in an erasible optical recording medium
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD17 citations82
US4091171AMay 23, 1978
Optical information storage material and method of making it
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD20 citations82
US5151295ASep 29, 1992
Process for manufacturing an optical recording medium
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD20 citations81
US5395669AMar 7, 1995
Optical record medium
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD19 citations74
US4457794AJul 3, 1984
Method for manufacturing optical memory disc
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD12 citations74
USRE36383ENov 9, 1999
Optical recording medium and production process for the medium
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD8 citations73
US5674649AOct 7, 1997
Method of recording information
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD10 citations73
US5665520ASep 9, 1997
Optical recording medium
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD7 citations73
US5439752AAug 8, 1995
Optical recording medium and reflecting film for use therein
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD8 citations73
US5147701ASep 15, 1992
Information recording medium
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD13 citations73
US5024910AJun 18, 1991
Optical information recording medium
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD18 citations73
US4547875AOct 15, 1985
Optical recording and retrieving disc
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD9 citations73
US4330883AMay 18, 1982
System and method of optical information storage in a recording disc
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD14 citations73
US4322839AMar 30, 1982
Method and apparatus for recording and reproducing information on and from an optical disk
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD18 citations73
US4770923ASep 13, 1988
Protection film structure for functional devices
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD13 citations72
US4852076AJul 25, 1989
Optical information recording and reproducing disc employing a film having thermally changeable optical characteristics
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD8 citations70
US6967911B1Nov 22, 2005
Multivalued information recording method, multivalued information recording apparatus, and recording medium
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD3 citations63
US5753334AMay 19, 1998
Optical recording medium
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD4 citations62
US5587216ADec 24, 1996
Optical recording medium
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD4 citations62
US7193947B1Mar 20, 2007
Optical information recording method, optical information recording device and optical information recording medium
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD0 citations52
US5256518AOct 26, 1993
Information storage disk employing a reflective layer having good malleability
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD1 citations52