DEFINITIVE TECHNOLOGY, LLC

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
H04R LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS 1493
 
  
 
1401 EQUIPMENT FOR THE RECORDING OR REPRODUCTION OF SOUNDS OR PICTURES251
 
  
 
A61F FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, E.G. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS 1139
 
  
 
G10K SOUND-PRODUCING DEVICES 134
 
  
 
H03B GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS 162
 
  
 
H05K PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS 1155

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
9538268 Complementary asymmetric transducer configuration for lower distortion and extended rangeMay 23, 14Jan 03, 17[H04R]
9426576 Loudspeaker and electrodynamic acoustic transducer with bulbous waveguide tipFeb 25, 15Aug 23, 16[H04R]
9282410 Transducer motor structure with enhanced fluxJul 22, 14Mar 08, 16[H04R]
9185478 Ruggedized sound systemSep 15, 12Nov 10, 15[H04R]
9129588 Configurable noise cancelling systemSep 15, 12Sep 08, 15[A61F, G10K, H03B, H04R]
8995697 Bipolar speaker with improved clarityJun 16, 11Mar 31, 15[H04R]
8971560 Sound system for portable devicesSep 15, 12Mar 03, 15[H04R]
8638968 Low-profile loudspeaker driver and enclosure assemblyDec 30, 10Jan 28, 14[H04R, H05K]
8243963 Swivel tweeter mechanism for a constant phase coaxial acoustic transducerJun 18, 09Aug 14, 12[H04R]
8014545 Ceiling or wall-mounted loudspeaker system with anti-diffraction wave launch deviceDec 18, 06Sep 06, 11[A47B, H04R, H05K]

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
6097829 Fiber-honeycomb-fiber sandwich speaker diaphragm and methodExpiredOct 21, 97Aug 01, 00[H04R]
5790481 Retrofitable CD player systemExpiredNov 21, 96Aug 04, 98[H04Q, H04B]
5388221 Adaptive digital audio interpolation systemExpiredMay 05, 92Feb 07, 95[G10L]

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