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14000 CAEN, FR
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Patents Grants
last 30 patents
Information
Patent Grant
Master disk for making dies for pressing in particular optical disks
Patent number
5,770,238
Issue date
Jun 23, 1998
Digipress
Jean Ledieu
B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information
Patent Grant
Methods of manufacture of master disk for making a die for pressing...
Patent number
5,763,002
Issue date
Jun 9, 1998
Digipress
Jean Ledieu
B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information
Patent Grant
Compact disc comprising an antipiracy marking and method of providi...
Patent number
5,671,205
Issue date
Sep 23, 1997
Digipress
Jean Ledieu
G11 - INFORMATION STORAGE
Information
Patent Grant
Process of manufacture of a master disk and/or of an optical disk
Patent number
5,622,815
Issue date
Apr 22, 1997
Digipress
Jean Ledieu
G11 - INFORMATION STORAGE
Information
Patent Grant
Method of manufacturing dies for pressing optical disks
Patent number
5,312,718
Issue date
May 17, 1994
Digipress
Jean Ledieu
G11 - INFORMATION STORAGE
Information
Patent Grant
Method for the manufacture of an optically readable disc, and discs...
Patent number
5,166,014
Issue date
Nov 24, 1992
Digipress
Jean Ledieu
G11 - INFORMATION STORAGE
Patents Applications
last 30 patents
Trademark
last 30 trademarks
Information
Trademark
74139615 - ARKSEAL
Serial number
74139615
Registration number
1823601
Filing date
Feb 12, 1991
DIGIPRESS
9 - Scientific, nautical, surveying, photographic, cinematographic, optical, weighing, measuring, signalling, checking (supervision), life-saving and teaching apparatus and instruments
Information
Trademark
74135362 - CD-PACK
Serial number
74135362
Filing date
Feb 1, 1991
Digipress, Inc.
20 - Furniture, mirrors, picture frames
Information
Trademark
73755952 - CENTURY DISC
Serial number
73755952
Registration number
1563121
Filing date
Sep 30, 1988
DIGIPRESS (S.A.)
9 - Scientific, nautical, surveying, photographic, cinematographic, optical, weighing, measuring, signalling, checking (supervision), life-saving and teaching apparatus and instruments
Information
Trademark
73755950 - CENTURY MASTER
Serial number
73755950
Filing date
Sep 30, 1988
DIGIPRESS (S.A.)
9 - Scientific, nautical, surveying, photographic, cinematographic, optical, weighing, measuring, signalling, checking (supervision), life-saving and teaching apparatus and instruments