ESS TECHNOLOGY, INC.

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
G06F ELECTRIC DIGITAL DATA PROCESSING 13434
 
  
 
H01M PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY 12142
 
  
 
H03M CODING, DECODING OR CODE CONVERSION, IN GENERAL 10101
 
  
 
H03F AMPLIFIERS 776
 
  
 
H03K PULSE TECHNIQUE 6125
 
  
 
G06G ANALOGUE COMPUTERS 548
 
  
 
H03H IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS 566
 
  
 
H04B TRANSMISSION 5205
 
  
 
H04R LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS 5102
 
  
 
G10H ELECTROPHONIC MUSICAL INSTRUMENTS 229

Top Patents (by citation)

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Recent Publications

Publication # Title Filing Date Pub Date Intl Class
2017/0280,244 Switchable Four-pole Jack For Supporting Balanced Headphones and Headset Operation in Mobile ApplicationsMar 16, 17Sep 28, 17[H04R]
2014/0272,493 METHODS TO PREPARE STABLE ELECTROLYTES FOR ALL IRON REDOX FLOW BATTERIESMar 07, 14Sep 18, 14[H01M]

Recent Patents

Patent # Title Filing Date Issue Date Intl Class
9865895 Methods to prepare stable electrolytes for iron redox flow batteriesMar 07, 14Jan 09, 18[H01M]
9806366 Method and system for rebalancing electrolytes in a redox flow battery systemOct 18, 16Oct 31, 17[H01M]
9806684 Method and apparatus for achieving very high-output signal swing from class-D amplifierSep 10, 16Oct 31, 17[H03F]
9793867 Method and apparatus for achieving very high-output signal swing from class-D amplifier using fewer componentsOct 22, 16Oct 17, 17[H04R, H03F]
9692420 Programmable circuit components with recursive architectureOct 31, 16Jun 27, 17[H03K]
9685651 Internally manifolded flow cell for an all-iron hybrid flow batterySep 05, 13Jun 20, 17[H01M]
9647640 Semi-analog FIR filter with high impedance stateJul 02, 15May 09, 17[G06F, H03H]
9614244 Redox and plating electrode systems for an all-iron hybrid flow batterySep 05, 13Apr 04, 17[H01M]
9595931 Two differential amplifier configurationDec 12, 14Mar 14, 17[H03F]
9509011 Method and system for rebalancing electrolytes in a redox flow battery systemMar 06, 14Nov 29, 16[H01M]

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
2017/0126,196 Low Noise Audio Rendering CircuitAbandonedOct 31, 16May 04, 17[H03H]
2017/0111,742 Apparatus and Method for Driving Headphones Differentially in Mobile ApplicationsAbandonedSep 10, 16Apr 20, 17[H04R]
2017/0111,743 Apparatus and Method for Detecting and Driving Headphones Differentially in Mobile ApplicationsAbandonedSep 10, 16Apr 20, 17[H04R]
2011/0140,738 Multi-Phase Integrators in Control SystemsAbandonedJan 06, 10Jun 16, 11[H03L, G05B]
2011/0140,743 Digital Frequency GeneratorAbandonedJan 06, 10Jun 16, 11[H03B, G06G]
2011/0140,757 Analog Processing Elements In A Sum of ProductsAbandonedJan 06, 10Jun 16, 11[G06G]
2010/0118,173 Method and apparatus for controlling charge transfer in CMOS sensors with an implant by the transfer gateAbandonedDec 04, 09May 13, 10[H04N]
7570693 Low noise digital to pulse width modulated converter with audio applicationsExpiredSep 26, 05Aug 04, 09[H03K, H03M, H04B]
7457836 Bi-quad digital filter configured with a bit binary rate multiplierExpiredMar 26, 07Nov 25, 08[G06F]
7430020 Separation of composite video signals using dot crawl detectorExpiredJul 07, 05Sep 30, 08[H04N]
7349491 Frequency shaping stream signal processorExpiredMar 26, 04Mar 25, 08[H04L]
2008/0005,215 System and method for reducing click using signal averaging on a high order modulator outputAbandonedJun 30, 06Jan 03, 08[G06F]
2008/0005,216 System and method to reduce audio artifacts from an audio signal dispersed among multiple audio channels by reducing the order of each control loop by selectively activating multiple integrators located within each control loopAbandonedJun 30, 06Jan 03, 08[G06F]
7277491 Data access arrangement using a high frequency transformer for electrical isolationExpiredMay 14, 02Oct 02, 07[H04B]
2007/0165,131 System and method for measuring tilt of a sensor die with respect to the optical axis of a lens in a camera moduleAbandonedJun 30, 06Jul 19, 07[G03B]
2007/0133,969 System and method for measuring and setting the focus of a camera assemblyAbandonedJun 30, 06Jun 14, 07[G03B]
2007/0109,171 Audio ouput soft start by use of output driver enable signalAbandonedMay 12, 06May 17, 07[H03M]
2007/0110,151 System and method for video frame buffer compressionAbandonedNov 14, 05May 17, 07[H04N]
2007/0069,794 System and method for generating self-aligned clock signals for consecutive circuit operationsAbandonedSep 28, 05Mar 29, 07[G06F]
2007/0069,929 High speed sigma delta deviceAbandonedSep 28, 05Mar 29, 07[H03M]

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