SCHWABISCHE HUTTENWERKE GMBH

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
B01D SEPARATION 2132
 
  
 
B01J CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS, COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS 1108
 
  
 
F01N GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES 172
 
  
 
F04B POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS 161
 
  
 
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
6089842 Gear oil pump with internal rotor, comprising extensions of reniform suction and pressure elementsApr 02, 99Jul 18, 00[F04C]
5395217 Gear pump for oil for an internal-combustion engine, in particular for motor vehiclesApr 28, 94Mar 07, 95[F04B]
5266279 Filter or catalyst bodyMar 19, 92Nov 30, 93[F01N, B01D]
5179061 Filter or catalyst bodyJul 12, 91Jan 12, 93[B01J, B01D]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
2002/0195,223 Metal casting molded body comprising a cast-in hard material bodyAbandonedMay 10, 02Dec 26, 02[B22D]
2002/0160,894 Insulating device for a variable thermal rim insulation of a rollAbandonedMar 08, 02Oct 31, 02[F28F]
6444055 Composite material with a high proportion of intermetallic phases, preferably for friction bodiesExpiredAug 09, 99Sep 03, 02[F16D, C21D, C22C]
6436022 Roll adjustable in shapeExpiredAug 28, 97Aug 20, 02[F28F]
2002/0096,309 Gradient material molded bodyAbandonedNov 07, 01Jul 25, 02[B22D]
2001/0020,420 Roll assembly and rollAbandonedJan 04, 01Sep 13, 01[B30B]
6283735 Variable-delivery external gear pumpExpiredOct 13, 99Sep 04, 01[F04C]
6039681 Heating rollExpiredOct 02, 96Mar 21, 00[B23P]
5765521 Pump unitExpiredOct 15, 96Jun 16, 98[F01M]
5655596 Steam-heated rollExpiredApr 01, 96Aug 12, 97[F28D]
5456069 Exhaust gas filterExpiredOct 10, 91Oct 10, 95[B01D]
5425236 Catalyzer arrangement for the exhaust gases of an internal combustion engineExpiredOct 23, 92Jun 20, 95[F01N]
5405423 Filter for the separation of impurities from waste gasesExpiredOct 15, 93Apr 11, 95[B01D]
5359771 Process for the manufacture of a gear wheel in an internal grearedExpiredApr 28, 93Nov 01, 94[B21D, F16H]
5351399 Method for forming grooves in roll surfacesExpiredJul 31, 91Oct 04, 94[A01G, A01B]
5335492 Exhaust gas filter and/or a catalytic converterExpiredMar 16, 92Aug 09, 94[F01N]
5271704 Broaching device for a siloExpiredJun 04, 92Dec 21, 93[B65G]
5229078 Filter for the separation of impurities or contaminantsExpiredNov 14, 90Jul 20, 93[B01J, B01D]
5215724 Sintered composite filterExpiredSep 05, 91Jun 01, 93[B01D]
5211918 Catalytic converter for exhaust gasesExpiredJan 14, 92May 18, 93[B01D]

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