Siemens Electric Limited

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
F02M SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF 2261
 
  
 
F16K VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING766
 
  
 
F02B INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL 369
 
  
 
A61F FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, E.G. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS 2138
 
  
 
B01D SEPARATION 2132
 
  
 
H03B GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS 261
 
  
 
B32B LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM1156
 
  
 
F01P COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES 139
 
  
 
F02F CYLINDERS, PISTONS, OR CASINGS FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES 134
 
  
 
G05D SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES 183

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
6102364 Control accuracy of a pulse-operated electromechanical deviceJul 30, 97Aug 15, 00[F16K]
6084971 Active noise attenuation systemJun 10, 97Jul 04, 00[A61F, G10K, H03B]
5988147 Exhaust gas recirculation valve with floating valve assemblyAug 11, 97Nov 23, 99[F02M, F02B]
5957115 Pulse interval leak detection systemFeb 12, 97Sep 28, 99[F02M]
5911401 Electric actuated exhaust gas recirculation valveFeb 24, 97Jun 15, 99[F16K, F02M]
5902426 Process for manufacturing an air flow valveAug 27, 97May 11, 99[B32B]
5865863 Combined air cleaner-resonatorMay 08, 97Feb 02, 99[B01D]
5860400 Intake-exhaust manifold bridge noise attenuation system and methodSep 17, 97Jan 19, 99[F02F]
5828759 System and method for reducing engine noiseNov 30, 95Oct 27, 98[A61F, H03B]
5803056 Canister vent valve having electric pressure sensor and valve actuatorFeb 12, 97Sep 08, 98[F02M]

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
5994812 D.C. motor phase windings and their commutationExpiredOct 29, 96Nov 30, 99[H02K]
5925999 Three-speed dual-winding direct current permanent magnet motor method and apparatusExpiredNov 13, 96Jul 20, 99[H02P]
5898988 Method of making a brushless motor with inside mounted single bearingExpiredMar 05, 97May 04, 99[H02K]
5877573 D.C. motor and reversing circuitExpiredJul 22, 97Mar 02, 99[H02K]
5871335 Twist-lock attachment system for a cooling fan and motorExpiredJul 26, 96Feb 16, 99[F04D]
5845612 Total cooling assembley for I. C. engine-powered vehiclesExpiredApr 16, 97Dec 08, 98[F01P]
5844338 Slim-line brushless motor with inside mounted single bearingExpiredNov 26, 97Dec 01, 98[H02K]
5817925 Evaporative emission leak detection systemExpiredMar 26, 97Oct 06, 98[G01M, F02M]
5818133 Brushless motor with tubular bearing supportExpiredApr 19, 96Oct 06, 98[H02K]
5813375 Method and system for distributing vapors or gases to each cylinder of a multicylinder engineExpiredMar 11, 96Sep 29, 98[F02M]
5814908 Blower wheel with axial inlet for ventilationExpiredApr 30, 96Sep 29, 98[H02K, F04D]
5809976 Vent control valving for fuel vapor recovery systemExpiredNov 29, 95Sep 22, 98[F02M]
5811898 Rotary actuatorExpiredDec 21, 95Sep 22, 98[H02K]
5773907 Brush holder assemblies having novel brush holdersExpiredJun 28, 95Jun 30, 98[H02U]
5765630 Radiator with air flow directing finsExpiredSep 19, 96Jun 16, 98[F28D, F27F]
5744921 Control circuit for five-phase brushless DC motorExpiredMay 02, 96Apr 28, 98[H02K]
5734219 Sliding brush system with shape memory alloy element for two-speed direct current motorExpiredJun 17, 96Mar 31, 98[H02K]
5689148 Multi-pole, two-speed brush holder assemblyExpiredFeb 28, 96Nov 18, 97[H02K]
5675464 Stall or reduced-speed protection system for electric motorExpiredMay 02, 96Oct 07, 97[H02H]
5666988 Throttle shaft and plate constructionExpiredFeb 06, 96Sep 16, 97[F16K]

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