RED CHIP COMPANY LTD.

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
1403 COMMUNICATIONS EQUIPMENT, WIRELESS REMOTE CONTROLS AND RADIO AMPLIFIERS763
 
  
 
H03F AMPLIFIERS 380
 
  
 
G10H ELECTROPHONIC MUSICAL INSTRUMENTS 229
 
  
 
A61K PREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOSES 1254
 
  
 
H02H EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS 176
 
  
 
H02K DYNAMO-ELECTRIC MACHINES 1106

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
D682251 Audio component with main control knobJun 04, 10May 14, 13[1403]
D682252 Audio componentJun 04, 10May 14, 13[1403]
D671907 Audio component with honeycomb patternJun 04, 10Dec 04, 12[1403]
D666989 Rack-mount audio component with removable earsJun 04, 10Sep 11, 12[1403]
D665772 Rack-mount audio component with removable ears and honeycomb patternJun 04, 10Aug 21, 12[1403]
D665773 Rack-mount audio component with removable ears and main control knobJun 04, 10Aug 21, 12[1403]
D665379 Rack-mount audio component with removable ears and illuminated on/off switchJun 04, 10Aug 14, 12[1403]
8093486 Touch screen guitarMay 18, 10Jan 10, 12[G10H]
6812394 Method and device for determining rhythm units in a musical pieceJul 24, 02Nov 02, 04[G10H]
6259183 Carbon commutatorNov 10, 99Jul 10, 01[H02K]

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
2014/0090,545 SOUND MIXING CONSOLEAbandonedDec 09, 13Apr 03, 14[G10H]
7155020 Audio circuitry for dynamics reductionExpiredMar 29, 01Dec 26, 06[H03F]
2004/0146,170 Graphic audio equalizer with parametric equalizer functionAbandonedApr 02, 03Jul 29, 04[H03G]
2003/0223,596 Audio multi-channel equalizerAbandonedJul 24, 02Dec 04, 03[H03G]
6587670 Dual mode class D amplifiersExpiredJun 29, 99Jul 01, 03[H04B]
6304137 Output stage for high power class D amplifiersExpiredDec 23, 99Oct 16, 01[H02M, H03F]
6297693 Techniques for synchronizing a self oscillating variable frequency modulator to an external clockExpiredDec 23, 99Oct 02, 01[H03F]
6249182 Class D amplifier with bandwidth independent of load impedanceExpiredNov 10, 99Jun 19, 01[H03F]
6232833 Low noise low distortion class D amplifierExpiredNov 10, 99May 15, 01[H03F]
6229389 Class D modulator with peak current limit and load impedance sensing circuitsExpiredNov 12, 99May 08, 01[H03F]
6172541 Driver circuit having load-independent slew rateExpiredSep 14, 98Jan 09, 01[H03K]
6127905 Dielectric filter and method for adjusting bandpass characteristics of sameExpiredOct 30, 98Oct 03, 00[H01P]
5959501 Class D amplifier with scaled clock and related methodsExpiredJan 14, 98Sep 28, 99[H03K, H03M, H03F]
5805020 Silent start class D amplifierExpiredJun 27, 96Sep 08, 98[H03F]
5767740 Switching amplifier closed loop dual comparator modulation techniqueExpiredSep 27, 96Jun 16, 98[H03F]
5672998 Class D amplifier and methodExpiredAug 09, 95Sep 30, 97[H03F]

Top Inventors for This Owner

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