Chaparral Communications

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
H01Q AERIALS 4106
 
  
 
H04B TRANSMISSION 2208
 
  
 
H01P WAVEGUIDES; RESONATORS, LINES OR OTHER DEVICES OF THE WAVEGUIDE TYPE 159
 
  
 
H04H BROADCAST COMMUNICATION 154
 
  
 
H04N PICTORIAL COMMUNICATION, e.g. TELEVISION 1241

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
7957692 Signal receiver circuit and method of implementationOct 19, 07Jun 07, 11[H04N, H04B, H01Q, H04H]
5748156 High-performance antenna structureMay 16, 96May 05, 98[H01Q]
5734964 Mass programmable FM stereo sound equalized assistive listening apparatusFeb 03, 97Mar 31, 98[H04B]
5461394 Dual band signal receiverJun 21, 94Oct 24, 95[H01Q]
5459441 Signal propagation using high performance dual probeJan 13, 94Oct 17, 95[H01P, H01Q]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
5603077 Satellite system and method for remote control of a satellite signal receiverExpiredDec 19, 94Feb 11, 97[H04B, H04H]
5579367 Multi-medium closed-loop controlled satellite broadcast network for simple end-user operationExpiredMar 13, 95Nov 26, 96[H04M, H04B, G01S]
5103237 Dual band signal receiverExpiredOct 05, 88Apr 07, 92[H01P, H01Q]
4902988 Control for flexible probeExpiredJan 27, 89Feb 20, 90[H01P]
4829313 Drive system and filament for a twistable septum in a feedhornExpiredApr 14, 86May 09, 89[H01Q]
4804971 Guy system for parabolic reflecting antennaExpiredApr 16, 86Feb 14, 89[H01Q]
RE32835 Polarized signal receiver systemExpiredNov 06, 85Jan 17, 89[H01P]
4686491 Dual probe signal receiverExpiredOct 22, 85Aug 11, 87[H01P]
4578681 Method and apparatus for optimizing feedhorn performanceExpiredJun 21, 83Mar 25, 86[H01Q]
4544900 Polarized signal receiver systemExpiredJul 30, 82Oct 01, 85[H01P]
4503379 Rotation of microwave signal polarization using a twistable, serpentine-shaped filamentExpiredApr 12, 83Mar 05, 85[H01P]
D272910 Feedhorn for parabolic antennaeExpiredJun 08, 81Mar 06, 84[]
4414516 Polarized signal receiver systemExpiredNov 18, 81Nov 08, 83[H01P]
4380014 Feed horn for reflector antennaeExpiredAug 13, 81Apr 12, 83[H01Q]

Top Inventors for This Owner

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