| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_c72d118f5664072de841f9c5c34b9d99 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H01J61-523 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H01J61-52 |
| filingDate |
1971-04-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
1973-03-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_8c9ceb85027516eb4bdedf22cd350ba0
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_f72be60753ce37b5bae096343dd7eadb |
| publicationDate |
1973-03-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-3723784-A |
| titleOfInvention |
Alumina ceramic lamp having heat-reflecting shields surrounding its electrodes |
| abstract |
A high intensity sodium vapor lamp utilizing a tubular envelope of alumina ceramic closed at the ends by niobium end caps which support activated tungsten electrodes and which contains mercury and an excess of sodium not all of which is vaporized during operation. It is desirable that the excess of sodium and mercury condense in the exhaust tube or appendage and not about the interface between the end cap and the sealing glass binding it to the alumina envelope. This result is achieved by providing a heat shield of polished refractory metal about the ends of the arc tube next to the end caps. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0028128-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4230964-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/DE-3038993-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5015913-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2008238321-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6236162-B1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4342939-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/DE-2928067-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-3974410-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0315261-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-9534090-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5612585-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-7755289-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5844350-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5680000-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6242851-B1 |
| priorityDate |
1971-04-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |