Hazeltine Corporation

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
H01Q AERIALS 8102
 
  
 
G01S RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES3106
 
  
 
H04B TRANSMISSION 1209

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
5861834 Virtual noise radar waveform for reduced radar detectabilityFeb 14, 98Jan 19, 99[G01S]
5742593 On-line distributed TDMA/FDMA/CDMA link assignment in mobile radio networks with flexible directivityAug 29, 95Apr 21, 98[H04B]
5719579 Virtual noise radar waveform for reduced radar detectabilityMay 30, 96Feb 17, 98[G01S]
5534882 GPS antenna systemsFeb 03, 94Jul 09, 96[H01Q]
5502447 Beam sharpened pencil beam antenna systemsOct 28, 93Mar 26, 96[H01Q]
5434587 Wide-angle polarizers with refractively reduced internal transmission anglesSep 10, 93Jul 18, 95[H01Q]
5402133 Synthesizer radiating systems and methodsMay 29, 92Mar 28, 95[H01Q]
5369413 Q equalization in dual-element end-fire array antennasJul 02, 93Nov 29, 94[H01Q]
5359334 X-scan aircraft location systemsJan 14, 93Oct 25, 94[H01Q, G01S]
5264862 High-isolation collocated antenna systemsDec 10, 91Nov 23, 93[H01Q]

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
2002/0018,048 Z-AXIS POINTING STICK WITH ESD PROTECTIONAbandonedFeb 04, 97Feb 14, 02[G08B]
5856810 Low sidelobe multi-beam lossless feed networks for array antennasExpiredOct 02, 96Jan 05, 99[H01Q]
5485036 Local ground plane for high frequency circuitsExpiredAug 03, 94Jan 16, 96[H01L]
5410319 Near field antenna measurement systems and methodsExpiredSep 22, 93Apr 25, 95[H01Q]
5402116 Atmospheric pressure calibration systems and methodsExpiredApr 28, 92Mar 28, 95[G08C, G01S]
5304998 Dual-mode communication antennaExpiredMay 13, 92Apr 19, 94[H01Q]
5270723 Near field antenna measurement systems and methodsExpiredOct 08, 92Dec 14, 93[H01Q, G01R]
5206656 Array antenna with forced excitationExpiredDec 28, 89Apr 27, 93[H01Q]
5177491 Navigation receiver with beam asymmetry immunityExpiredSep 06, 90Jan 05, 93[G01S]
5151707 Linear array antenna with e-plane backlobe suppressorExpiredJan 02, 91Sep 29, 92[H01Q]
5151332 Aluminum sheets bonded with cadmiumExpiredDec 13, 90Sep 29, 92[B32B]
5138277 Signal processing system having a very long time constantExpiredSep 28, 90Aug 11, 92[H03G]
5132940 Current source preamplifier for hydrophone beamformingExpiredJun 14, 91Jul 21, 92[H04B]
5111208 Calibration of plural - channel systemExpiredFeb 23, 89May 05, 92[G01S]
5111214 Linear array antenna with E-plane backlobe suppressorExpiredApr 18, 89May 05, 92[H01Q]
5107534 Flat panel display system and methodExpiredSep 25, 89Apr 21, 92[G02B]
5044546 Process for bonding aluminum sheets with cadmium and product thereofExpiredDec 18, 89Sep 03, 91[B23K, H01P]
4999639 Radome having integral heating and impedance matching elementsExpiredMar 03, 89Mar 12, 91[H01Q]
4983981 Active array element amplitude stabilizationExpiredFeb 24, 89Jan 08, 91[H01Q, H03C, G01R]
4968982 Aircraft landing system having simplified out-of-coverage indication (OCI)ExpiredJul 10, 89Nov 06, 90[G01S]

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