http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-8909990-A1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_86bce779a1700d941a38fe8d8661e9b0 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G11B7-24 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G11B7-0033 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G11B7-26 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G11B7-0033 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G11B7-26 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G11B7-24 |
| filingDate | 1989-04-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_2745a9b49a36f0892dae87d0388b36ad http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_f055d21b622eb8bcbfe7a938ed44bc54 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_21cfd93a7c80fc08ed718d0abff009b2 |
| publicationDate | 1989-10-19-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | WO-8909990-A1 |
| titleOfInvention | Fabrication method of mask for rom type optical recording card and inspection method of mask |
| abstract | This invention relates to a fabrication method of a mask used for writing ROM type data to an optical recording medium of a ROM type optical recording card. The present invention first produces a mother mask having a pre-formatted pattern, then produces a master mask by transferring the pre-formatted pattern of the mother mask and by writing a necessary optical recording pattern and produces a working mask from the master mask. If the pre-formatted pattern is of a writable type, the inspection of the mother mask, the writing or inspection of the master mask and the inspection of the working mask can be made by a read/write device for a writable optical recording card. |
| priorityDate | 1988-04-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 25.