SVENSKA ROTOR MASKINER AB

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
F04C ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS 542
 
  
 
F01C ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES 227
 
  
 
F04B POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS 260
 
  
 
F25B REFRIGERATION MACHINES, PLANTS, OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS 266
 
  
 
F01K STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES 127
 
  
 
F16C SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OF CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS 169
 
  
 
F16H GEARING199
 
  
 
G03G ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY 180
 
  
 
H04W WIRELESS COMMUNICATION NETWORKS 1187

Top Patents (by citation)

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Recent Publications

Publication # Title Filing Date Pub Date Intl Class
2017/0142,620 METHOD FOR ASSISTING A WIRELESS DEVICE TO PERFORM UPLINK TRANSMISSIONSJul 04, 14May 18, 17[H04W]

Recent Patents

Patent # Title Filing Date Issue Date Intl Class
7617681 Method and means for controlling a flow through an expanderFeb 03, 05Nov 17, 09[F01K]
6695602 Bacterial growth inhibition in a circulation system comprising a compressorAug 21, 02Feb 24, 04[F04C]
6634980 Multi-step gearApr 03, 02Oct 21, 03[F16H]
6436598 Polymerization toner and process for producing the sameNov 09, 00Aug 20, 02[G03G]
6132103 Rotor provided with shaft pivotsMar 22, 99Oct 17, 00[F16C]
5947713 Pair of co-operating screw rotors, a screw rotor and a rotary screw machineMay 05, 97Sep 07, 99[F01C]
5732560 System and method for performing coolingMay 16, 97Mar 31, 98[F04B, F25B]
5678987 Rotary screw compressor with variable thrust balancing meansApr 08, 96Oct 21, 97[F04C]
5411387 Rotary displacement compressor having adjustable internal volume ratio and a method for regulating the internal volume ratioOct 29, 93May 02, 95[F01C]
5411388 Rotary screw machine with thrust balanced bearingsApr 12, 94May 02, 95[F04L]

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
2007/0207,045 CompressorAbandonedSep 30, 04Sep 06, 07[F04B]
7232298 Screw compressor in which the trailing flanks of the lobes of at least one rotor body are beveled at an end surface of the rotor body near the outlet portExpiredJul 11, 03Jun 19, 07[F03C]
2005/0089,414 Screw rotor and screw rotor compressorAbandonedOct 28, 03Apr 28, 05[F04B]
6849220 Method for producing polymer rotorsExpiredApr 04, 02Feb 01, 05[B29C, F04C]
6551084 Screw rotor machine having means for axially biasing at least one of the rotorsExpiredMay 03, 02Apr 22, 03[F01C]
6506027 Two stage compressor and a method for cooling such a compressorExpiredNov 09, 00Jan 14, 03[F04B]
6461119 Lift valve for a rotary screw compressorExpiredMar 26, 01Oct 08, 02[F04B]
6302667 Oil-free screw rotor apparatusExpiredFeb 11, 00Oct 16, 01[F01C]
5860801 Rotary screw compressor with unloading meansExpiredMay 28, 97Jan 19, 99[F04C]
5816055 Refrigeration system anad a method for regulating the refrigeration capacity of such a systemExpiredJul 10, 96Oct 06, 98[F25B]
5727936 Rotary displacement compressor with liquid circulation systemExpiredDec 10, 96Mar 17, 98[F04C]
5707223 Rotary screw compressor having a thrust balancing piston device and a method of operation thereofExpiredAug 22, 96Jan 13, 98[F04C]
5642629 Cooled air cycle system and method for operating such a systemExpiredOct 11, 95Jul 01, 97[F25D]
5641280 Rotary screw compressor with shaft sealExpiredJun 14, 95Jun 24, 97[F16C, F04C, F16J]
5310320 Rotor for a rotary screw machine having internal member and external shell made of pressed metal powderExpiredOct 13, 92May 10, 94[F04C]
5281115 Rotary screw machine having thrust balancing meansExpiredJul 07, 92Jan 25, 94[F01C]
5219499 Method for manufacturing screw rotorsExpiredNov 08, 91Jun 15, 93[B29C]
5063750 Rotary positive displacement compressor and refrigeration plantExpiredNov 27, 90Nov 12, 91[F01C]
5052901 Lift valve in a rotary screw machineExpiredOct 23, 90Oct 01, 91[F04B, F01C]
5037282 Rotary screw compressor with oil drainageExpiredJun 05, 90Aug 06, 91[F04C]

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