Global patent index - EP 1090391 A4

EP 1090391 A4 2001-04-11 - MULTI-LAYERED PHOTOCHROMIC OPTICAL DATA DISK

Title (en)

MULTI-LAYERED PHOTOCHROMIC OPTICAL DATA DISK

Title (de)

MEHRSCHICHTIGE PHOTOCHROMISCHE OPTISCHE DATENPLATTE

Title (fr)

DISQUE OPTIQUE PHOTOCHROME MULTICOUCHE DE MEMORISATION DE DONNEES

Publication

EP 1090391 A4 (EN)

Application

EP 98960155 A

Priority

  • US 9823194 W
  • US 6379797 P

Abstract (en)

[origin: WO9923650A1] A 2.5-dimensional optical storage medium (101) is formed from multiple layers of photochromic molecules embedded in a polymer matrix separated by transparent separating layers (107). The medium (101) is moved into position in three dimensions for two-photon single beam information writing. The information thus written can be read bit-by-bit or page-by-page. In the latter case, an area is illuminated, and the fluorescence is detected by a CCD camera.

IPC 1-7 (main, further and additional classification)

G11B 7/24; B32B 3/00; G11B 3/70; G11C 11/00

IPC 8 full level (invention and additional information)

B32B 3/00 (2006.01); G11B 7/004 (2006.01); G11B 7/0045 (2006.01); G11B 7/005 (2006.01); G11B 7/0055 (2006.01); G11B 7/244 (2006.01); G11B 7/257 (2013.01); G11B 7/00 (2006.01); G11B 7/006 (2006.01); G11B 7/14 (2006.01)

CPC (invention and additional information)

G11B 7/245 (2013.01); B82Y 10/00 (2013.01); G11B 7/00455 (2013.01); G11B 7/0052 (2013.01); G11B 7/00552 (2013.01); G11B 7/244 (2013.01); G11B 7/257 (2013.01); G11B 7/006 (2013.01); G11B 7/14 (2013.01); G11B 2007/0013 (2013.01)

Citation (search report)

Designated contracting state (EPC)

AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

EPO simple patent family

WO 9923650 A1 19990514; WO 9923650 A9 19991202; AU 1582199 A 19990524; EP 1090391 A1 20010411; EP 1090391 A4 20010411; JP 2001522119 A 20011113

INPADOC legal status

2005-06-01 [R18D] EP-APPLICATION DEEMED TO BE WITHDRAWN: (CORRECTION)

- Ref Legal Event Code: R18D

- Effective date: 20040819

2004-12-01 [18D] DEEMED TO BE WITHDRAWN

- Ref Legal Event Code: 18D

- Effective date: 20040809

2004-05-19 [32PN] PUBLIC NOTIFICATION UNDER RULE 80 EPC

- Ref Legal Event Code: 32PN

- Free Format Text: EPO FORM 2561 DATED 09.03.2004 OMD DEVICES LLC, 1013 CENTRE ROAD, WILMINGTON, DE 19805, US

2004-03-24 [D18D] EP-APPLICATION DEEMED TO BE WITHDRAWN: (DELETED)

- Ref Legal Event Code: D18D

2004-03-17 [18D] DEEMED TO BE WITHDRAWN

- Ref Legal Event Code: 18D

- Effective date: 20030503

2003-08-27 [32PN] PUBLIC NOTIFICATION UNDER RULE 80 EPC

- Ref Legal Event Code: 32PN

- Free Format Text: EPO FORM 2502B, SENT 23.01.03, "INVITATION TO GIVE NOTICE OF APPOINTMENT OFA PROFESSIONAL REPRESENTATIVE", ADDRESSED TO: OMD DEVICES, LLC. 101

2001-04-11 [17P] REQUEST FOR EXAMINATION FILED

- Ref Legal Event Code: 17P

- Effective date: 20000428

2001-04-11 [A4] SUPPLEMENTARY SEARCH REPORT

- Ref Legal Event Code: A4

- Effective date: 20010207

2001-04-11 [AK] DESIGNATED CONTRACTING STATES:

- Ref Legal Event Code: AK

- Designated State(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

2001-04-11 [AK] DESIGNATED CONTRACTING STATES:

- Ref Legal Event Code: AK

- Designated State(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE