| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_4beee3b90f0be1a3407812f33355ef35
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_0b2cac7f4ce72ba7fb82a7516c89f1eb
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_ac6f896f4b78933fde30de7b01a630af
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_7731e16d1cb695829b02ebaa294023c0
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_8e61e8c73260e594e57e90b306bddafc
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_0d1daf1365c9b513a5c82ab9fb6259fc |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B23K2101-007
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01N21-87
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B42D2035-44 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B23K26-03
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C04B41-0036
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B42D25-43
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/A44C17-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B23K26-361
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/A44C27-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C04B41-009
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B44F1-06
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B41M5-24
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B23K26-032 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/A44C17-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B28D5-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01N21-87
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B23K26-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C04B41-53
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B44C1-22 |
| filingDate |
2005-08-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_7001a1779836388fee49d9216dcf4834
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_528bb70b1adfd4e06b661b86e5387cc3
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_8aed23d66b2d09892b88d2c541c12e01
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_680bffc898053a17b7eee3964b56bd79
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_661c80692ff4c8134725b1e36c69a215
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_8f18112a0e7d7209e0ebf26f9dc1eb76 |
| publicationDate |
2006-09-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
WO-2006092035-A1 |
| titleOfInvention |
Method and system for laser marking in the volume of gemstones such as diamonds |
| abstract |
A method and an apparatus for laser marking indicia in the volume of gemstones such as diamonds, the indicia being made up of a plurality of microscopic dot-shaped marks whose build-up can be initiated by exposing naturally-occurring internal defects or impurities in the volume of a gemstone to a tightly focused train of laser pulses. Authentication data is encoded in the gemstone from the relative spatial arrangement of the dot-shaped marks that form the indicium. Taking advantage of the presence of otherwise invisible defects in the gemstone allows for inscribing indicia with laser pulses carrying energies substantially lower than the threshold energy required for inscribing in the volume of a perfect gemstone material. The marking process is then much less susceptible to inflict damages to the surface of the gemstone, and the marking can be performed using a broad variety of femtosecond laser systems. The dot-shaped marks engraved at a depth below the surface of a gemstone can be made undetectable with the unaided eye or with a loupe by limiting their individual size to a few micrometres, while devising indicia made up of only a few marks. As a result, the marking does not detract from the appearance and value of the gemstone. The procedure for laser marking accounts for the random spatial distribution of the defects present in natural gemstones as well as for their strongly localized character. The presence of an indicium can be detected by using a dedicated optical reader that can be afforded by every jewellery store. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-11685003-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/RU-2719611-C1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/RU-2751986-C1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-109889252-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-102906562-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2011122989-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-109889252-B
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-2590242-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2013013685-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-9640751-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/RU-2611232-C2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2020218940-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/FR-2921748-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2009077663-A2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2009077663-A3
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2020197432-A1 |
| priorityDate |
2005-03-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |