http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-104838441-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B29K2105-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B29K2995-002 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B29K2995-0002 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B29K2067-003 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B29K2105-0854 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B29C59-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B29C59-022 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/E04B1-84 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G10K11-16 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G10K11-172 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G10K11-162 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G10K11-172 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G10K11-162 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G10K11-16 |
| filingDate | 2013-11-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2019-01-11-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2019-01-11-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-104838441-B |
| titleOfInvention | Acoustical plate with fine resonant structure and preparation method thereof and the sound absorption formula sound insulationg board for utilizing it |
| abstract | The present invention is disclosed including fine resonant structure, and by acoustical plate of sound absorbing performance raising tremendously low frequency band and preparation method thereof and can utilize its sound absorption formula sound insulationg board according to fine resonance principle.Acoustical plate of the invention is characterized in that, it is formed with the multiple relief patterns being made of protrusion and recessed portion on one side in porous substrate, according to the following formula 1 come the area ratio of the recessed portion set as 40%~99%, the gas permeability in region corresponding with above-mentioned recessed portion is lower than the gas permeability in region corresponding with above-mentioned protrusion.The area ratio of (formula 1) recessed portion=(area of recessed portion)/(area of porous substrate). |
| priorityDate | 2012-12-06-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 28.