EP0347801A3
Optical recording media and information recording and reproducing units
Abstract
The present invention provides an optical recording medium using an amorphous-crystalline phase-change for recording and erasing, wherein reflectivity of an optical recording medium-constituting recording film in an amorphous state is larger than that of the optical recording medium-constituting recording film in a crystalline state, or wherein absorptivity of an optical recording medium-constituting recording film in an amorphous state is smaller than that of the optical recording medium-constituting recording film in a crystalline state.
Term
Term ended
Projected expiry passed 19 June 2009, 17.3 years ago.
- Priority
- Filed
- Published
- Projected expiry
- Today
1 sheet
Sheet 1
Every citation, both waysCites: the store holds 1 of 2
| Document | Relation | Office | Category | Cited during |
|---|---|---|---|---|
| US3716844A | Cites | United States of America | X | Search report |
| SPIE. (OPTICAL MASS DATA STORAGE) vol. 529, 1985, pages 46-50, Tokyo, JP; M. TERAO et al.: "Sn-Te-Se Phase Change Recording Film for Optical Disks" | Non-patent | – | – | Search report |
| PATENT ABSTRACTS OF JAPAN vol. 010, no. 274 (P-498), 18 September 1986; & JP - A - 61096541 (NEC CORP) 15.05.1986 | Non-patent | – | – | Search report |
19 members in 7 offices
Priority claims3
| Document | Office | Kind | Date |
|---|---|---|---|
| 15474388 | Japan | – | |
| 15474388 | Japan | A | |
| JP19880154743 | – | – | – |
Members19
| Document | Office | Kind | |
|---|---|---|---|
| EP0347801A2 | European Patent Office (EPO) | A2 | |
| JPH025238A | Japan | A | |
| CN1039920A | China | A | |
| KR910001677A | Republic of Korea | A | |
| EP0347801A3This record | European Patent Office (EPO) | A3 | |
| CN1018303B | China | B | |
| CA1332467C | Canada | C | |
| US5484686A | United States of America | A | |
| JP2512087B2 | Japan | B2 | |
| EP0784316A2 | European Patent Office (EPO) | A2 | |
| EP0347801B1 | European Patent Office (EPO) | B1 | |
| DE68928337D1 | Germany | D1 | |
| DE68928337T2 | Germany | T2 | |
| KR0144001B1 | Republic of Korea | B1 | |
| EP0784316A3 | European Patent Office (EPO) | A3 | |
| USRE36624E | United States of America | E | |
| EP0784316B1 | European Patent Office (EPO) | B1 | |
| DE68929438D1 | Germany | D1 | |
| DE68929438T2 | Germany | T2 |
22 legal events, as the office reported them to INPADOC
Over the term
Point at a mark for the eventEvents
| Event | Code | |
|---|---|---|
| Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25 | PG25 | |
| Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25 | PG25 | |
| Nl: lapsed or anulled due to non-payment of the annual feeLapsedNLV4 | NLV4 | |
| Annual fee paid to national office [announced via postgrant information from national office to epo]GrantedPGFP | PGFP | |
| Annual fee paid to national office [announced via postgrant information from national office to epo]GrantedPGFP | PGFP | |
| No opposition filedOpposition26N | 26N | |
| No opposition filed within time limitOppositionORIGINAL CODE: 0009261PLBE | PLBE | |
| Information on the status of an ep patent application or granted ep patentGrantedSTATUS: NO OPPOSITION FILED WITHIN TIME LIMITSTAA | STAA | |
| Corresponds to:REF | REF | |
| Designated contracting statesAK | AK | |
| Miscellaneous (deleted)DX | DX | |
| Designated contracting states (corrected)RBV | RBV | |
| (expected) grantORIGINAL CODE: 0009210GRAA | GRAA | |
| Despatch of communication of intention to grant a patentORIGINAL CODE: EPIDOS IGRAGRAH | GRAH | |
| Despatch of communication of intention to grant a patentORIGINAL CODE: EPIDOS IGRAGRAH | GRAH | |
| Despatch of communication of intention to grantORIGINAL CODE: EPIDOS AGRAGRAG | GRAG | |
| First examination report despatched17Q | 17Q | |
| Designated contracting statesAK | AK | |
| Search report despatchedORIGINAL CODE: 0009013PUAL | PUAL | |
| Request for examination filed17P | 17P | |
| Designated contracting statesAK | AK | |
| Public reference made under article 153(3) epc to a published international application that has entered the european phaseORIGINAL CODE: 0009012PUAI | PUAI |
Numbers
- Publication
- 0347801
- Publication, DOCDB
- 0347801
- Publication, EPODOC
- EP0347801
- Application
- 111107
- Application, DOCDB
- 89111107
- Application, EPODOC
- EP19890111107
Titles3
- English
- OPTICAL RECORDING MEDIA AND INFORMATION RECORDING AND REPRODUCING UNITS
- German
- Optisches Aufzeichnungsmedium und Einheiten zur Informationsaufzeichnung und Wiedergabe
- French
- Matériau d'enregistrement optique et unités d'enregistrement et de reproduction d'information
Classification
- CPC, 17
- G11B7/257
- G11B7/00454
- G11B7/0052
- G11B7/00557
- G11B7/24
- G11B7/243
- G11B7/2531
- G11B7/258
- G11B7/2585
- G11B7/2595
- G11B2007/24304
- G11B2007/24308
- G11B2007/2431
- G11B2007/24312
- G11B2007/24314
- G11B2007/24316
- Y10S430/146
- IPC, 9
- B41M5 26
- G11B7 00
- G11B7 003
- G11B7 0045
- G11B7 005
- G11B7 0055
- G11B7 24
- G11B7 243
- G11B7 30
Designated states1
- Contracting states, 1
- Netherlands (Kingdom of the)