| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_bcff13f8573db698307f919e6385d5c4 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/A61K6-17
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/A61K6-818
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/A61K6-807
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C03C10-0045
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/A61K6-77
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C04B35-053
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/A61K6-816 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C03C10-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/A61K6-06
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C04B35-053 |
| filingDate |
1985-01-09-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
1986-03-18-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_83afb64fa2591cde862cc36a09c3c0ee
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_13f43d7240205abd0fd56c3f82445e9b |
| publicationDate |
1986-03-18-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-4576922-A |
| titleOfInvention |
High expansion dental crown core ceramic composition |
| abstract |
A strong white ceramic composition and method of making the same wherein said composition is characterized by an average coefficient of thermal expansion over the range of 25 DEG C. to 500 DEG C. ("Proposed American National Standards Institute/American Dental Association Specification No. 38.1 For Porcelain-Alloy Systems") of between 14 to 16x10-6/ DEG C. and a transverse strength of about 18,000 psi or even greater. The ceramic composition comprises about 40 to 60% by weight crystalline magnesium oxide particles (e.g., 74 mu m ) dispersed in a modified silicate glass containing at least 3% by weight of dissolved ZrO2, TiO2 or mixtures thereof and is made by firing a powdered mixture of MgO2 and modified silicate glass at about 1150 DEG C. for sufficient time to produce a fine dispersion of forsterite (Mg2SiO4) in the continuous glass matrix phase along with the crystalline magnesia particles. Such ceramic compositions are useful in high expansion dental crown core applications. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4871396-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5308391-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2008245467-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-7186461-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-7387838-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4737411-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5849068-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6126732-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2005266251-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6015592-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2005266252-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6322623-B1 |
| priorityDate |
1983-01-05-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |