DOBLE ENGINEERING COMPANY

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
G01R MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES 8151
 
  
 
H03F AMPLIFIERS 281
 
  
 
G06F ELECTRIC DIGITAL DATA PROCESSING 1446
 
  
 
H04B TRANSMISSION 1209
 
  
 
H04L TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION 1284
 
  
 
H05K PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS 1155
 
  
 
H04W WIRELESS COMMUNICATION NETWORKS 1187

Top Patents (by citation)

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Recent Publications

Publication # Title Filing Date Pub Date Intl Class
2017/0289,192 SECURED METHOD FOR TESTING AND MAINTENANCE OF BULK ELECTRICAL SYSTEMS (BES) ASSETSMar 29, 17Oct 05, 17[H04L, H04W]

Recent Patents

Patent # Title Filing Date Issue Date Intl Class
9874613 Method and system of apparatuses for testing utility power devicesMar 13, 17Jan 23, 18[G01R]
9671451 System and method for performing transformer diagnosticsMar 13, 15Jun 06, 17[G01R]
9632128 Method and apparatus for testing utility power devicesSep 28, 16Apr 25, 17[G01R]
9551752 Dual ground breaker testing systemJan 16, 14Jan 24, 17[G01R]
9482712 Method and apparatus for testing utility power devicesNov 04, 13Nov 01, 16[G01R]
9313878 Methods and circuit structures for mitigating voltage stresses on printed circuit board (PCB) in high voltage devicesMar 12, 14Apr 12, 16[G06F, H05K]
8792542 Method and device for improved detection and analysis of partial discharge activity in and around high voltage electrical equipmentMar 24, 10Jul 29, 14[H04B]
6633169 Monitoring leakage currents from high-voltage devicesApr 08, 99Oct 14, 03[G01R]
5818245 Impedance measuringDec 30, 96Oct 06, 98[G01R]
5635871 Low phase error amplifyingDec 15, 92Jun 03, 97[H03F]

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
6177803 Monitoring elements in a multi-phase alternating current networkExpiredJun 07, 95Jan 23, 01[G01R]
5541827 Reducing switching losses in a phase-modulated switch-mode amplifierExpiredMay 17, 95Jul 30, 96[H02M]
5068636 Current shuntingExpiredOct 26, 89Nov 26, 91[H01C]
5021648 Motion tranducing through conversion of linear motion to circular motionExpiredFeb 28, 90Jun 04, 91[G01D]
4973919 Amplifying with directly coupled, cascaded amplifiersExpiredMar 23, 89Nov 27, 90[H03F]
4794507 Controlling electrical powerExpiredDec 14, 87Dec 27, 88[H02P]
4541040 Power convertingExpiredNov 21, 83Sep 10, 85[H02M]
4510354 Current tap selecting switchExpiredApr 12, 84Apr 09, 85[H01H]
4454480 Amplifying with cascaded class B amplifiersExpiredJul 15, 81Jun 12, 84[H03F]

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