| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_99517d5a9775436a2252cf612d7d6cd9
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_e17ac3e790b960c8a589610fa3d767e6 |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01N2201-08
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/A61B2560-0456
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01N2021-6421
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/A61B5-0084
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/A61B5-6887
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/A61B5-0071
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/A46B2200-1066
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/A61B2560-0214 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/A46B15-0036
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/A46B15-0034
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/A61B5-0071
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/A46B9-04
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01N21-6486
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/A61B5-0088 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/A61C19-04
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01N21-64
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/A46B15-00 |
| filingDate |
2017-03-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_1c774099225b4c4dd8cded36c50cd5ad
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_1a0a9a3c693762002f620eb3cedb7e36
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_e8b2c090ca77a15d2231192ec0e67cd6
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_c9686d87f3ba22798463bb07842e9148
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_e0be3e730c092ef8ab43ee3409ea95e6 |
| publicationDate |
2019-01-09-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
EP-3424461-A1 |
| titleOfInvention |
Plaque detecting device and toothbrush |
| abstract |
The plaque detecting device of the present invention comprises a light emitting unit (450) which irradiates ultraviolet or blue excitation light (L) toward the tooth surface (99a), and a first and second light receiving units (402) which receive radiated light (L') from the tooth surface (99a). The first light receiving unit extracts the spectral component of a first wavelength region including the wavelength range of fluorescent light specific to plaque from the radiated light (L'), and obtains a first output value corresponding to the intensity of that spectral component. The second light receiving unit extracts, from the radiated light (L'), the spectral component of a second wavelength region containing the wavelength range of the fluorescent light specific to enamel and having a predetermined lower limit wavelength below the lower limit wavelength of the first wavelength region, and obtains a second output value corresponding to the intensity of this spectral component. Determination of the relative magnitude of the ratio between the first output value and the second output value as compared to a first threshold value is performed. Determination of the relative magnitude of the difference between the first output value and the second output value as compared to a second threshold value is performed. |
| priorityDate |
2016-03-24-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |