DEVICE ENGINEERING CO., LTD.

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
G05F SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES 793
 
  
 
B08B CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL 157
 
  
 
G02F DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH IS MODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THE DEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY, COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g. SWITCHING, GATING, MODULATING OR DEMODULATING; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF; FREQUENCY-CHANGING; NON-LINEAR OPTICS; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS 1132
 
  
 
H01L SEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR 1361
 
  
 
H03H IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS 170

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
8968487 Wafer container cleaning deviceJan 24, 11Mar 03, 15[H01L, B08B]
7675276 DC/DC converterMay 08, 06Mar 09, 10[G05F]
7638994 Switching power supply circuitJun 05, 07Dec 29, 09[G05F]
7545129 Switching power supply circuitJun 05, 07Jun 09, 09[G05F]
7518428 Phase compensation circuit and power circuit having sameSep 09, 05Apr 14, 09[H03K, H03H]
7459895 Power circuitOct 28, 05Dec 02, 08[G05F]
7142040 Stabilized power supply circuitMar 26, 04Nov 28, 06[G05F]
7135844 Control circuit for DC/DC converterApr 27, 04Nov 14, 06[G05F]
6580253 Boosting and step-down switching regulator controlling circuit and boosting and step-down switching regulator for use in the sameAug 06, 02Jun 17, 03[G05F]
5739887 Liquid crystal display device with reduced frame portion surrounding display areaOct 13, 95Apr 14, 98[G02F]

Expired/Abandoned/Withdrawn Patents

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Top Inventors for This Owner

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