| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_680dd0699e3f4ba8532d128c7152b3bb
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_79d298d21adb79b78d1c311bc8d1033b
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_bcc1869440c657264b50652b60562605 |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C04B2111-00801
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D2323-08
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C04B2235-96
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y10T428-2982
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C04B2235-3217
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C04B2235-78 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K8-80
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K8-805
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C04B38-009
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D67-0088
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C04B35-628
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C04B35-62813
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C04B35-62821
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C04B28-24
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J13-02
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D71-025 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C04B35-628
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J-
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D71-02
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J13-02
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09K8-80
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C04B38-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C04B28-24
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B32B5-16 |
| filingDate |
2004-02-06^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_a7f8cb06186583f83203d68c180def77
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_a3f387973cd7a40c68ee168c741eb4ad |
| publicationDate |
2005-03-10^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
WO-2005021147-A2 |
| titleOfInvention |
High strength polycrystalline ceramic spheres |
| abstract |
A method for making hollow spheres of alumina or aluminate comprises: coating polymeric beads with an aqueous solution of an alumoxane, drying the beads so as to form an alumoxane coating on the beads; heating the beads to a first temperature that is sufficient to convert the alumoxane coating to an amorphous alumina or aluminate coating and is not sufficient to decompose the polymeric beads; dissolving the polymeric bead in a solvent; removing the dissolved polymer from the amorphous alumina or aluminate coating; and heating the amorphous alumina or aluminate coating to a second temperature that is sufficient to form a hollow ceramic sphere of desired porosity and strength. The hollow spheres can be used as proppants or can be incorporated in porous membranes. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-7669658-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/AU-2013200446-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-11578263-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-7867613-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2008018966-A3
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-111732746-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-107418551-B
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-8003212-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-111732746-B
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EA-016841-B1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-7883773-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-7914892-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-7887918-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-8012533-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-8298667-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-8603578-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-8075997-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-107418551-A |
| priorityDate |
2003-02-06^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |