MANNESMANNROHREN-WERKE AG

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
B23D PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR 128

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
6887020 Device for deburring the inside of a longitudinally seam-welded pipe, and method for adjusting a device of this typeFeb 17, 04May 03, 05[B23D]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
2008/0040,922 METHOD AND APPARATUS FOR MAKING METALLIC, NON-ROTATIONALLY SYMMETRIC RINGSAbandonedOct 19, 07Feb 21, 08[B21D]
7012217 Method and apparatus for making welded large pipesExpiredJul 02, 04Mar 14, 06[B23K]
2005/0204,556 Method and apparatus for making metallic, non-rotationally symmetric ringsAbandonedJul 08, 04Sep 22, 05[B21K]
6936119 Method for producing metallic, non-rotationally symmetrical rings with a constant wall thickness over their circumferenceExpiredJul 11, 01Aug 30, 05[C21D]
6931931 Device for ultrasonic weld seam testing of longitudinally welded pipes for longitudinal and transversal errorsExpiredJul 04, 02Aug 23, 05[G01N]
6866815 Metallurgical vessel and method for producing the sameExpiredApr 04, 03Mar 15, 05[B22D]
6843131 Method of detecting discontinuities on elongated workpiecesExpiredApr 29, 03Jan 18, 05[G01N]
6648209 Process for producing welded steel pipes with a high degree of strength, ductility and deformabilityExpiredNov 13, 01Nov 18, 03[H05B, B23K]
6613272 Vessel for metallurgical purposesExpiredAug 13, 01Sep 02, 03[B22D, C21C]
6446565 Blast tuyere for shaft furnaces, in particular blast furnaces or hot-blast cupola furnacesExpiredJul 26, 01Sep 10, 02[F23L, F22B, C21C, C21B]
6409963 Metallurgic containerExpiredMar 30, 01Jun 25, 02[C21C]
4304574 Heating system for fluidized bed gas generatorExpiredMar 17, 80Dec 08, 81[C10B]
4243493 Process for transportation and distillation of petroleum with methanolExpiredFeb 03, 78Jan 06, 81[F17D, C10G, B01D]

Top Inventors for This Owner

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