| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_f8e81676b855d5849a02fe3f66202816 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G06K7-0008 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G08B13-14
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G06K7-00 |
| filingDate |
2004-11-19^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
2007-05-08^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_20056bf5371d34fc8f1155c79b96c65f
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_6ec531cb1326f7d4c5906aa2382f2ca5 |
| publicationDate |
2007-05-08^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-7215249-B2 |
| titleOfInvention |
Radio frequency identification reader |
| abstract |
Radio Frequency Identification (RFID) readers with a directional coupler. At least one embodiment of the present invention provides an RFID reader designed to use a directional coupler to receive signals from an antenna which is connected to a radio frequency source of the reader to transmit signals. The directional coupler samples the signals received at the antenna and provides the received signal to a receiver of the RFID reader. In one example, the receiver of the RFID reader compares a portion of the signals from the radio frequency source with the received signal from the directional coupler to receive data from RF tags. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-7671720-B1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-8340581-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2009267746-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2010120368-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2006069588-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2011304439-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-8862495-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-8760261-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2011006895-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-8427313-B2 |
| priorityDate |
2003-11-19^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |