GENERAL SIGNAL DEVELOPMENT CORPORATION, A CORP. OF DELAWARE

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
B01F MIXING, e.g. DISSOLVING, EMULSIFYING, DISPERSING 1131
 
  
 
F16K VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING370
 
  
 
H01Q AERIALS 3107
 
  
 
B65G TRANSPORT OR STORAGE DEVICES, e.g. CONVEYERS FOR LOADING OR TIPPING; SHOP CONVEYER SYSTEMS; PNEUMATIC TUBE CONVEYERS 265
 
  
 
G01G WEIGHING 226
 
  
 
B01D SEPARATION 1133
 
  
 
B25G HANDLES FOR HAND IMPLEMENTS 113
 
  
 
B28C PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER 114
 
  
 
C12P FERMENTATION OR ENZYME-USING PROCESSES TO SYNTHESISE A DESIRED CHEMICAL COMPOUND OR COMPOSITION OR TO SEPARATE OPTICAL ISOMERS FROM A RACEMIC MIXTURE 198
 
  
 
F04C ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS 146

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
5999145 Antenna systemJun 26, 98Dec 07, 99[H01Q]
5988604 Mixing impellers especially adapted for use in surface aerationOct 10, 97Nov 23, 99[B01F]
5972661 Mixing systemsSep 28, 98Oct 26, 99[C12P]
5925293 Mixer sparging apparatusJul 16, 97Jul 20, 99[B01D]
5896981 Spliced conveyer belt method and apparatusJan 03, 97Apr 27, 99[B65G, F16G]
5877456 System for checking the calibration of gravimetic feeders and belt scalesJul 22, 97Mar 02, 99[G01G]
5865422 Bi-directional valve seal mechanismDec 19, 97Feb 02, 99[F16K]
5836570 Gate valve seatSep 25, 96Nov 17, 98[F16K]
5784974 System for improving fuel feed control of volumetric coal feedersApr 22, 97Jul 28, 98[F23N]
5779359 Mixer having exposed clean-in-place bearing assembliesMay 05, 97Jul 14, 98[B01F]

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
5951162 Mixing impellers and impeller systems for mixing and blending liquids and liquid suspensions having efficient power consumption characteristicsExpiredMar 03, 98Sep 14, 99[B01F]
5929821 Slot antennaExpiredApr 03, 98Jul 27, 99[H01Q]
5861858 Antenna feed and support systemExpiredJun 30, 97Jan 19, 99[H01Q]
5842377 Mixer gearbox assembly having a cross-shaft alternatively mounted in one or two bearings and configured to receive different drive motorsExpiredNov 07, 96Dec 01, 98[F16H]
5758965 Mixer systemExpiredDec 05, 96Jun 02, 98[B01F]
5746536 Double taper lock system for a locking a mixer shaft in a quillExpiredNov 07, 96May 05, 98[F16B]
5747747 Continuing belt-type conveyor and means for weighing contents transported thereonExpiredJan 23, 96May 05, 98[G01G]
5720486 Self-formed labyrinth sealExpiredNov 07, 96Feb 24, 98[F16J]
5655780 Mixer seal assembly with fast connect couplingExpiredJan 18, 96Aug 12, 97[F16J]
5568985 Mixer apparatus having an improved steady bearingExpiredOct 26, 94Oct 29, 96[F16C]
5560709 Mixer drive apparatus enabling radial changing of shaft sealExpiredNov 13, 95Oct 01, 96[B01F]
5547167 Gate valve for fluidized particular materialExpiredJun 21, 95Aug 20, 96[F16K]
5511811 Air damping for bicycle shock absorbing forkExpiredApr 24, 95Apr 30, 96[B62K]
5504495 Field convertible NTSC/HDTV broadcast antennasExpiredSep 17, 93Apr 02, 96[H01Q]
5454986 Down-flow batch mixing systemExpiredAug 04, 94Oct 03, 95[B01D]
5455548 Broadband rigid coaxial transmission lineExpiredFeb 28, 94Oct 03, 95[H01P]
D360037 Lab mixer for biotechnologyExpiredOct 15, 92Jul 04, 95[]
5427450 Apparatus and method for in-place cleaning of a mixerExpiredSep 28, 94Jun 27, 95[B01F]
5378062 Transfer assembly for disassembly deviceExpiredFeb 23, 93Jan 03, 95[B01F]
5364184 Coupling method for high power magnetic devicesExpiredFeb 23, 93Nov 15, 94[B01F]

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