Balcke-Durr Aktiengesellschaft

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
B01B BOILING; BOILING APPARATUS13

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
5547540 Device for cooling gases and optionally drying solid particles added to the gasAug 03, 94Aug 20, 96[B01B]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
5871045 Heat exchangerExpiredJul 01, 96Feb 16, 99[F28F]
5595063 Device and method for degassing make-up water for a steam turbine processExpiredJul 28, 94Jan 21, 97[F01K, B01D]
5560209 Arrangement for improving efficiency of a power plantExpiredDec 09, 94Oct 01, 96[F01K, F22B]
5458465 Fan impellerExpiredFeb 02, 94Oct 17, 95[F04D]
5440807 Method for manufacturing heat exchanger elementsExpiredApr 22, 94Aug 15, 95[B23D]
5429185 Heat exchanger with a plurality of parallel heat exchanger tubesExpiredJul 06, 94Jul 04, 95[F28F]
5301746 Natural draft cooling towerExpiredJan 22, 93Apr 12, 94[F28B]
5282313 Method for producing heat exchange elements and heat exchange elements produced therebyExpiredNov 24, 92Feb 01, 94[B23P]
5167879 Open-surface componentExpiredMar 19, 92Dec 01, 92[B01F]
5097582 Apparatus for the exact positioning and fastening of several parts onto a hollow bodyExpiredAug 24, 90Mar 24, 92[B23Q]
5007165 Method of producing a cam shaftExpiredAug 30, 90Apr 16, 91[B23P]
4875270 Method of securing parts to a hollow memberExpiredMar 15, 89Oct 24, 89[B23P, B21D]
4827605 Apparatus for securing straight tubes between two tube sheets in a pressure-tight mannerExpiredJul 15, 88May 09, 89[B23P]
4782571 Method for securing straight tubes between two tube sheets in a pressure-tight mannerExpiredMar 18, 87Nov 08, 88[B21D]
4772182 Rotor vane adjusting deviceExpiredJun 19, 87Sep 20, 88[F03D, F01D]
4727635 Method of securing tubes between tube sheetsExpiredApr 24, 87Mar 01, 88[B23P]
4705057 Cleaning device for regenerative heat exchangersExpiredJun 27, 85Nov 10, 87[B08B]
4690207 Natural-draft cooling tower with forced-draft flow over reflux condensersExpiredNov 05, 85Sep 01, 87[F28B]
4667539 Planetary gear driveExpiredOct 05, 84May 26, 87[F16H]
4651809 Regenerative heat exchangerExpiredJun 27, 85Mar 24, 87[F28D]

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