Hoesch Aktiengesellschaft

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
C07D HETEROCYCLIC COMPOUNDS 1161

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
5103004 N-sultamsulfonamidesAug 23, 91Apr 07, 92[C07D]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
4827099 Method and apparatus for continuous production of tubular bodies by means of laser longitudinal seam weldingExpiredSep 18, 87May 02, 89[B23K]
4798144 Hollow charge shell constructed as drill ammunitionExpiredSep 05, 86Jan 17, 89[F42B]
4789254 Large antifriction bearingExpiredMar 17, 87Dec 06, 88[F16C]
4778287 Annular multi-row bearing with shaped-wire racesExpiredApr 27, 87Oct 18, 88[F16C]
4771199 Center-free large antifriction bearing with integrated electrical direct driveExpiredApr 20, 87Sep 13, 88[H02K]
4721536 Method for making steel tubes or pipes of increased acidic gas resistanceExpiredJun 10, 86Jan 26, 88[C21D]
4714195 Track spike with a single or double shaftExpiredSep 10, 85Dec 22, 87[E01B]
4696520 Running wheel for track vehiclesExpiredMar 27, 86Sep 29, 87[B60B, B62D]
4674369 Underfloor wheelset turning machine for reprofiling the wheel type contours of railway wheelsetsExpiredDec 11, 85Jun 23, 87[B23B]
4669292 Underfloor wheel set barring machine for retreading of rim circumferences of railroad wheel setsExpiredNov 15, 85Jun 02, 87[A01N]
4656332 Use of the laser welding process for and method of manufacturing of welded construction parts for exhaust installationsExpiredDec 02, 85Apr 07, 87[B23K]
4634049 Concrete crosstie with recesses and method for the production thereofExpiredMar 11, 85Jan 06, 87[E01B]
4621176 Method of and device for monitoring and/or controlling welding current in the high-frequency resistance pressure welding of pipes with longitudinal seamsExpiredOct 18, 85Nov 04, 86[B23K]
4621181 Method of manufacturing multilayer screw seam pipes and device for carrying out the methodExpiredAug 10, 84Nov 04, 86[B23K]
4610618 Hydraulic pressExpiredAug 28, 85Sep 09, 86[B29F, B29C, B30B]
4605178 Device for the compensating storage of packing band in packaging machinesExpiredOct 04, 84Aug 12, 86[B65H, B65B]
4587135 Process for producing metallic coatingsExpiredNov 07, 84May 06, 86[B05D]
4578971 Machine for manufacturing spiral seam piping from strip metalExpiredJul 11, 84Apr 01, 86[B21C]
4573811 Center-free large rolling bearingExpiredApr 03, 85Mar 04, 86[F16C]
4552524 Hydraulic pressExpiredDec 28, 84Nov 12, 85[B29C, B30B]

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