Durferrit GmbH

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
C23C COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL 497
 
  
 
C09D COATING COMPOSITIONS, e.g. PAINTS, VARNISHES, LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR 191
 
  
 
C21D MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING, OR OTHER TREATMENTS 144
 
  
 
F27B FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS123

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
8747573 Method for producing corrosion-resistant surfaces of nitrated or nitrocarburated steel componentsOct 29, 08Jun 10, 14[C23C]
8092214 Method for continuous mixing and melting inorganic salts and furnace installation for realizing the methodMar 24, 08Jan 10, 12[F27B]
8083866 Method for hardening the surfaces of work pieces made of stainless steel, and a molten salt bath for realizing the methodOct 31, 08Dec 27, 11[C23C]
7909943 Method for hardening stainless steel and molten salt bath for realizing said processJun 11, 07Mar 22, 11[C23C]
6964712 Hardening protection compositions for partial carburization of metallic componentsAug 07, 01Nov 15, 05[C23C, C09D]
5527018 Filter unit and apparatus for desludging salt bathsNov 21, 94Jun 18, 96[C21D]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
2011/0160,450 EXPLOSIVEAbandonedJul 24, 09Jun 30, 11[C07D]

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