| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_e3b0a3dbf8d6c9712d86ea1383fd5327 |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01P2004-03
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01P2004-32
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C03B2201-02
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01P2004-61
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01P2004-54
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y10T428-2982
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01P2006-12 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01B33-14
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B22F1-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C03B19-1065
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01B33-158
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J6-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J19-08
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01B33-181
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C03C23-0075
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C03C3-06
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C03B19-1095
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01B33-18 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C03C23-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01B33-18
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C03B19-10 |
| filingDate |
2015-07-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_a9848acf5094c51f2cd42bf8af6a27f9 |
| publicationDate |
2015-11-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-2015321939-A1 |
| titleOfInvention |
Synthetic amorphous silica powder and method for producing same |
| abstract |
The synthetic amorphous silica powder of the present invention is characterized in that it comprises a synthetic amorphous silica powder obtained by applying a spheroidizing treatment to a silica powder, and by subsequently cleaning and drying it so that the synthetic amorphous silica powder has an average particle diameter D 50 of 10 to 2,000 μm; wherein the synthetic amorphous silica powder has: a quotient of 1.00 to 1.35 obtained by dividing a BET specific surface area of the powder by a theoretical specific surface area calculated from the average particle diameter D 50 ; a real density of 2.10 to 2.20 g/cm 3 ; an intra-particulate porosity of 0 to 0.05; a circularity of 0.75 to 1.00; and an unmolten ratio of 0.00 to 0.25. This synthetic amorphous silica powder is less in amount of gas components adsorbed to surfaces of particles of the powder and in amount of gas components within the particles, so that a synthetic silica glass product manufactured by using the powder is remarkably decreased in amount of generation or degree of expansion of gas bubbles even upon usage of the product in a high temperature and reduced pressure environment. |
| priorityDate |
2010-01-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |