Lang Apparatebau GmbH

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
F04B POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS 359
 
  
 
B01D SEPARATION 1133
 
  
 
H02P CONTROL OR REGULATION OF ELECTRIC MOTORS, GENERATORS, OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS 186

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
6457944 Regulation of the stroke frequency of a dosing pumpJan 03, 01Oct 01, 02[F04B]
6299419 Reciprocating diaphragm pump with packless piston-cylinder unitJan 21, 00Oct 09, 01[F04B]
6168390 Dosing pump for dosed liquid conveyanceOct 22, 99Jan 02, 01[F04B]
6121739 Dosing pump and method for enhancing dosing precisionJun 23, 99Sep 19, 00[H02P]
5871566 Vented metering pumpMay 09, 97Feb 16, 99[B01D]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
2002/0117,187 DOSING METHOD FOR ADDING DETERGENT TO A DISHWASHING MACHINEAbandonedJun 18, 99Aug 29, 02[B08B]
5758761 Installation and a process for lubricating, cleaning and/or disinfecting conveyor belts or chainsExpiredApr 17, 96Jun 02, 98[B65G]
5588809 Metering pump with a vent valveExpiredAug 07, 95Dec 31, 96[F04B]
5492449 Piston diaphragm pump for the delivery of liquids in dosesExpiredMay 11, 94Feb 20, 96[F04B]
5318078 Process for bottling beveragesExpiredJun 25, 91Jun 07, 94[G01N, G05D]
5208930 Method and device for supplying treatment products to a compartment, particularly a washing machine compartmentExpiredDec 03, 91May 11, 93[D06F]
4735228 Device for dispersing solid detergents as aqueous suspensions or solutionsExpiredJun 22, 87Apr 05, 88[B01F]
4655690 Bellows pump having adjustable stop cam for varying the strokeExpiredNov 21, 85Apr 07, 87[F04B, F01B]
4518006 Backflow-preventing valveExpiredMar 10, 83May 21, 85[F16K]
4486910 Metering method for supplying detergent concentrateExpiredApr 23, 82Dec 11, 84[D06F]
4463582 Apparatus for supplying detergent concentrateExpiredMay 27, 83Aug 07, 84[D06F]
4403738 Device for spraying aqueous mixturesExpiredApr 29, 82Sep 13, 83[B05B]
4256440 Liquid dosing apparatusExpiredJul 09, 79Mar 17, 81[F04B]
4249556 Isolating and backflow preventing valve assemblyExpiredOct 25, 78Feb 10, 81[F16K, E03B]

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