| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_25814a6142a210761d073f257abc2227 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C04B35-597
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C04B35-584 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C04B35-584
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C04B35-597 |
| filingDate |
1975-11-18-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
1977-01-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_33cef70ad98e1ead3008b0f21ac92444 |
| publicationDate |
1977-01-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-4004937-A |
| titleOfInvention |
Method for producing a sintered silicon nitride base ceramic and said ceramic |
| abstract |
A silicon nitride based ceramic is formed of silicon nitride and at least two metal oxides of such a type that when the metal oxides are heated separately they form a spinel. Combination of said metal oxides and said silicon nitride as fine powders and sintering same at a specified temperature for a specified period of time results in a silicon nitride based ceramic having improved mechanical and chemical properties. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4781874-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4689188-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-RE30286-E
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4883776-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-115594496-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4814301-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4280973-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5829850-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-115594496-B
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4511525-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5160508-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5362691-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-8907093-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4892848-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5021372-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4919689-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5118645-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4521358-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5120328-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4781993-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5098449-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0175041-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5312785-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-8741797-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5091347-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0015421-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4917958-A |
| priorityDate |
1972-10-24-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |