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Hirakata, JP
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last 30 patents
Information
Patent Grant
Optical recording medium and production process for the medium
Patent number
RE36383
Issue date
Nov 9, 1999
Matsushita Electric Industrial Co., Ltd.
Kazumi Yoshioka
430 - Radiation imagery chemistry: process, composition, or product thereof
Information
Patent Grant
Optical recording medium and reflecting film for use therein
Patent number
5,439,752
Issue date
Aug 8, 1995
Matsushita Electric Industrial Co., Ltd.
Kazumi Yoshioka
G11 - INFORMATION STORAGE
Information
Patent Grant
Method of recording and erasing information in an erasible optical...
Patent number
5,230,973
Issue date
Jul 27, 1993
Matsushita Electric Industrial Co., Ltd.
Kazumi Yoshioka
G11 - INFORMATION STORAGE
Information
Patent Grant
Optical recording medium and production process for the medium
Patent number
5,194,363
Issue date
Mar 16, 1993
Matsushita Electric Industrial Co., Ltd.
Kazumi Yoshioka
G11 - INFORMATION STORAGE
Information
Patent Grant
Optical information recording medium
Patent number
5,191,565
Issue date
Mar 2, 1993
Matsushita Electric Industrial Co., Ltd.
Kazuo Inoue
G11 - INFORMATION STORAGE
Information
Patent Grant
Process for manufacturing an optical recording medium
Patent number
5,151,295
Issue date
Sep 29, 1992
Matsushita Electric Industrial Co., Ltd.
Katsumi Kawahara
G11 - INFORMATION STORAGE
Information
Patent Grant
Optical information recording medium
Patent number
5,024,910
Issue date
Jun 18, 1991
Matsushita Electric Industrial Co., Ltd.
Takeo Ohta
G11 - INFORMATION STORAGE
Information
Patent Grant
Method for producing information storage disk
Patent number
4,877,475
Issue date
Oct 31, 1989
Matsushita Electric Industrial Co., Ltd.
Masami Uchida
B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information
Patent Grant
Method of manufacturing an optical recording/reproducing disc
Patent number
4,546,464
Issue date
Oct 8, 1985
Matsushita Electric Industrial Co., Ltd.
Takao Inoue
G11 - INFORMATION STORAGE
Information
Patent Grant
Disc coating method
Patent number
4,452,819
Issue date
Jun 5, 1984
Matsushita Electric Industrial Co., Ltd.
Takao Inoue
G11 - INFORMATION STORAGE