L-3 COMMUNICATIONS ELECTRON TECHNOLOGIES, INC.

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
H01J ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS 18110
 
  
 
H02M APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF 597
 
  
 
F03H PRODUCING A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR 38
 
  
 
H03F AMPLIFIERS 380
 
  
 
H05B ELECTRIC HEATING; ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR 3108
 
  
 
H05H PLASMA TECHNIQUE 228
 
  
 
H01H ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES 193
 
  
 
H01P WAVEGUIDES; RESONATORS, LINES OR OTHER DEVICES OF THE WAVEGUIDE TYPE 159
 
  
 
H01Q AERIALS 1109
 
  
 
H02H EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS 176

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
7477042 Ion engine power supplyMar 06, 08Jan 13, 09[H02P, H02H]
6964396 Automatic accel voltage tracking system for an ion thrusterDec 04, 01Nov 15, 05[F03H]
6771014 Cathode designSep 07, 01Aug 03, 04[H01J]
6619028 Electric thruster made with surface treatments for improved thermal managementDec 05, 01Sep 16, 03[H05H]
6584675 Method for fabricating three dimensional traveling wave tube circuit elements using laser lithographyJun 09, 00Jul 01, 03[H01J, H01Q]
6489842 Multiple traveling wave tube amplifier electronic power conditioner with centralized low voltage and distributed high voltageJan 05, 01Dec 03, 02[H03F]
6483242 Traveling wave tube system with output waveguide-coupler terminationOct 25, 99Nov 19, 02[H01J]
6369520 Starter circuit for an ion engineAug 22, 01Apr 09, 02[H05B]
6369521 Starter circuit for an ion engineAug 22, 01Apr 09, 02[H05B]
6335854 High voltage isolated relay driverFeb 21, 00Jan 01, 02[H01H]

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
8427058 Traveling-wave tube turn-off body energy circuitExpiredFeb 08, 11Apr 23, 13[H01J]
8136340 Lateral flow high voltage propellant isolatorExpiredAug 05, 10Mar 20, 12[F03H]
8109075 Lateral flow high voltage propellant isolatorExpiredAug 05, 10Feb 07, 12[F03H]
7893620 Traveling-wave tube turn-off body energy circuitExpiredDec 20, 06Feb 22, 11[H01J]
7836679 Lateral flow high voltage propellant isolatorExpiredJul 19, 04Nov 23, 10[F03H]
7579778 Traveling-wave tube with integrated ion trap power supplyExpiredJul 11, 06Aug 25, 09[H01J]
7365518 Ion engine power supplyExpiredOct 07, 04Apr 29, 08[H02P]
7269940 Ion engine grid arcing protection circuitExpiredOct 07, 04Sep 18, 07[F03H]
2006/0028,144 Traveling wave tube with radioactive isotope charged particle sourceAbandonedAug 03, 04Feb 09, 06[H01J]
6786035 Ion thruster grid clearExpiredJul 22, 02Sep 07, 04[H05H]
6336318 Ion thruster having a hollow cathode assembly with an encapsulated heater, and its fabricationExpiredFeb 02, 00Jan 08, 02[F03H]
6324041 Protection circuit for traveling wave tubes having multiple input tonesExpiredOct 21, 99Nov 27, 01[H02H]
6250070 Ion thruster with ion-extraction grids having compound contour shapesExpiredMay 09, 00Jun 26, 01[H05H, F03H]
6058023 Isolation of high-voltage components in a dense environmentExpiredNov 06, 98May 02, 00[H05K]
5964633 Method of heat shrink assembly of traveling wave tubeExpiredDec 15, 97Oct 12, 99[H01J]
5959406 Traveling wave tube with expanding resilient support elementsExpiredAug 23, 95Sep 28, 99[H01J]
5952902 Coaxial "M" switchExpiredMar 12, 99Sep 14, 99[H01P, H01H]
5658181 Die and method for applying radial forces to an eccentric workpieceExpiredSep 11, 95Aug 19, 97[H01J, B23Q, B23P]
5600290 Hermetically sealed electromagnetic window and method of forming the sameExpiredSep 05, 95Feb 04, 97[H01P]
5561405 Vertical grounded coplanar waveguide H-bend interconnection apparatusExpiredJun 05, 95Oct 01, 96[H01P]

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