| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_050fc7b82c5d17d9aeb63a7cdcc546b3
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_65614843c49c0064cbda2880a07be0aa |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01H11-08
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01F1-666
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01F1-662
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01F1-668 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01F1-66
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01H11-08 |
| filingDate |
2019-05-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_5dddb410e7bcad908f05ced64ae45445
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_5bc12ea5295f8a7c8b55be705935117c
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_8634209921dcbb5e080c6cbc01a677e7
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_2d514e3462c782e12dcf7d8617e1b011 |
| publicationDate |
2020-02-06-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
WO-2020027409-A1 |
| titleOfInvention |
Ultrasonic transducers for flow velocity measurement with meta slab |
| abstract |
An ultrasonic transducer employing a meta slab includes a piezoelectric body configured to generate elastic waves; a meta slab connected to the piezoelectric body and configured to induce elastic wave mode conversion resonance with respect to the elastic waves incident on the meta slab; and a wedge connected to the meta slab, attached to an external surface of a pipe, and configured to transmit the elastic waves having passed through the meta slab to the pipe. The meta slab includes an anisotropic medium and a thickness of the meta slab satisfies the equation as follows: d = m·nFS·λFS /4, d = m·nSS·λSS /4, nSS/2 - nFS/2 = odd. Thus, highly-efficient flow velocity measurement is possible. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2021242063-A1 |
| priorityDate |
2018-08-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |