RADIO FREQUENCY SYSTEMS, INC.

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
H01P WAVEGUIDES; RESONATORS, LINES OR OTHER DEVICES OF THE WAVEGUIDE TYPE 2139
 
  
 
H01Q AERIALS 2189
 
  
 
H04B TRANSMISSION 8202
 
  
 
H01R ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS 6127
 
  
 
H03H IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS 269
 
  
 
H04M TELEPHONIC COMMUNICATION 2161
 
  
 
B25G HANDLES FOR HAND IMPLEMENTS 113
 
  
 
C08J WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER- TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C C08F, C08G or C08H 177
 
  
 
F16J PISTONS; CYLINDERS; PRESSURE VESSELS IN GENERAL; SEALINGS149
 
  
 
G01R MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES 1158

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
9843087 Methods and devices for protecting antenna components from contaminantsMay 02, 17Dec 12, 17[H01P, H01Q, F16J]
9231289 Methods and devices for providing a compact resonatorMay 10, 13Jan 05, 16[H01P]
8797124 Planar filter assemblyJun 13, 11Aug 05, 14[H01P, H03H]
7915978 Compact tunable dual band stop filterJan 29, 09Mar 29, 11[H01P]
7777598 Dielectric combine cavity filter having ceramic resonator rods suspended by polymer wedge mounting structuresApr 14, 08Aug 17, 10[H01P]
7755456 Triple-mode cavity filter having a metallic resonatorApr 14, 08Jul 13, 10[H01P]
7327210 Band agile filterJun 15, 04Feb 05, 08[H01P]
7113149 Apparatus and method for clamping cables in an antennaAug 09, 04Sep 26, 06[H01Q]
7099696 Angle diversity dual antenna systemFeb 14, 03Aug 29, 06[H04B]
7068127 Tunable triple-mode mono-block filter assemblyNov 14, 01Jun 27, 06[H01P]

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
6926555 Tuned radio frequency coaxial connectorExpiredOct 09, 03Aug 09, 05[H01R]
2005/0099,754 Impedance matched surge protected coupling loop assemblyAbandonedNov 12, 03May 12, 05[H02H]
2004/0118,591 Transmission line for radio frequency communicationsAbandonedDec 20, 02Jun 24, 04[H01B]
2004/0080,380 Hybrid phase shifter and power dividerAbandonedOct 29, 02Apr 29, 04[H01P]
6642814 System for cross coupling resonatorsExpiredDec 17, 01Nov 04, 03[H01P]
6624722 Coplanar directional coupler for hybrid geometryExpiredSep 12, 01Sep 23, 03[H01P]
6600394 Turnable, temperature stable dielectric loaded cavity resonator and filterExpiredJun 06, 00Jul 29, 03[H01P]
2003/0112,200 Horizontally polarized printed circuit antenna arrayAbandonedDec 17, 01Jun 19, 03[H01Q]
2003/0114,103 Repeater for use in a wireless communication systemAbandonedDec 19, 01Jun 19, 03[H04B]
6310585 Isolation improvement mechanism for dual polarization scanning antennasExpiredSep 29, 99Oct 30, 01[H01Q]
6166702 Microstrip antennaExpiredFeb 16, 99Dec 26, 00[H01Q]
6043795 Support system for large antennas, including multi-beam antennasExpiredOct 02, 98Mar 28, 00[H01Q]
5831215 High frequency coaxial cableExpiredJul 26, 95Nov 03, 98[H01B]
5790517 Power sharing system for high power RF amplifiersExpiredJul 26, 96Aug 04, 98[G08G]
5766037 Connector for a radio frequency cableExpiredOct 11, 96Jun 16, 98[H01R]
5742584 Power sharing system for RF amplifiersExpiredJun 12, 97Apr 21, 98[H04B]
5730365 Rotary water sprinkler including protective coverExpiredOct 19, 95Mar 24, 98[B05B]
5701596 Modular interconnect matrix for matrix connection of a plurality of antennas with a plurality of radio channel unitsExpiredDec 01, 94Dec 23, 97[H01Q]
5650758 Pipelined digital predistorter for a wideband amplifierExpiredNov 28, 95Jul 22, 97[H03F]
5584058 System and method for combining multiple transmitters in a multiple channel communication systemExpiredJul 07, 94Dec 10, 96[H04B]

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