AKG Akustische u.Kino-Gerate Gesellschaft m.b.H.

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
H03G CONTROL OF AMPLIFICATION 250
 
  
 
H04S STEREOPHONIC SYSTEMS 130

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
6519342 Method and apparatus for filtering an audio signalDec 09, 96Feb 11, 03[H03G]
D382874 Talk-listen deviceApr 03, 96Aug 26, 97[1403]
5544249 Method of simulating a room and/or sound impressionAug 19, 94Aug 06, 96[H04S, H03G]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
5903644 Monaural communication deviceExpiredJul 12, 96May 11, 99[H04M]
5283397 Diaphragm for electrodynamic transducerExpiredSep 25, 92Feb 01, 94[G10K]
5206643 System for managing a plurality of motor vehiclesExpiredDec 14, 90Apr 27, 93[G08G]
5146235 Helical UHF transmitting and/or receiving antennaExpiredDec 13, 90Sep 08, 92[H01Q]
5058171 Microphone arrangementExpiredJul 26, 90Oct 15, 91[H04R]
5033086 Stereophonic binaural recording or reproduction methodExpiredOct 24, 89Jul 16, 91[H04R]
5031216 Device for stereophonic recording of sound eventsExpiredJun 27, 89Jul 09, 91[H04R]
4991220 Microphone support memberExpiredMar 03, 89Feb 05, 91[H04R]
4955578 Resiliently fastened support device for a microphoneExpiredApr 13, 89Sep 11, 90[F16M]
4891610 UHF-feedback oscillatorExpiredFeb 16, 89Jan 02, 90[H03B]
4858719 Pressure gradient pickupExpiredJan 13, 87Aug 22, 89[G10K]
4817168 Directional microphoneExpiredMar 17, 87Mar 28, 89[H04R]
4809811 Ear pad construction for earphonesExpiredNov 14, 86Mar 07, 89[H04R]
4790021 Electrostatic transducerExpiredJul 08, 87Dec 06, 88[H04R]
4771476 Sound chamber closure for an electroacoustic transducerExpiredSep 12, 86Sep 13, 88[H04R, H01R]
4756308 Protective breathing mask having a speaking diaphragm for close communication and an electroacoustic transducer system for indirect speech transmission from inside the maskExpiredOct 23, 85Jul 12, 88[A62B]
4718415 Breathing mask having a transducer movable parts coupled to a speaking diaphragm for speech transmissionExpiredAug 21, 86Jan 12, 88[A62B]
4640382 Acoustic frictional resistance construction and method of producing an acoustic frictional resistance using a laserExpiredAug 28, 84Feb 03, 87[G10K, B23K]
4589136 Circuit for suppressing amplitude peaks caused by stop consonants in an electroacoustic transmission systemExpiredDec 20, 84May 13, 86[H04R]
4572324 Ear piece constructionExpiredMay 10, 84Feb 25, 86[H04R]

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