Didier-Werke AG

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
C04B LIME; MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS 563
 
  
 
B22D CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES 346
 
  
 
B32B LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM2155

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
6352951 Refractory material based on chromium corundum, a chromium corundum brick and the use of said brickMar 12, 00Mar 05, 02[C04B]
5942316 Multi-layer refractory wear bodySep 17, 97Aug 24, 99[C04B, B32B]
5656192 Immersed metallurgical pouring nozzlesApr 03, 96Aug 12, 97[B22D]
5420087 Refractory or fireproof brick as tin bath bottom brickFeb 15, 94May 30, 95[C04B]
5310164 Tapping pipe and system for a converter or electric arc furnaceMar 17, 93May 10, 94[B22D]
5279993 Gas injection stone and process of manufacture thereofDec 09, 91Jan 18, 94[C04B]
5173242 Means and method for forming a sealed connectionJul 30, 91Dec 22, 92[B22D]
RE33700 Parts subject to wear which come into contact with metal meltsDec 09, 87Sep 24, 91[C04B, B32B]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
6533994 Alkaline, refractory ceramic hollow itemExpiredDec 11, 00Mar 18, 03[C04B]
6487980 Refractory ceramic plate and accompanying wall structure for an incineratorExpiredFeb 06, 01Dec 03, 02[F23M]
6479175 Ceramic compositeExpiredNov 02, 00Nov 12, 02[B32B]
6409056 Refractory productExpiredMar 17, 00Jun 25, 02[B22D]
6279915 Refractory channel with outer insulation and method for joint packingExpiredApr 29, 99Aug 28, 01[F16J]
6226314 Assembly of a tapping device and a cooled inductorExpiredApr 16, 99May 01, 01[F27D]
6217825 Device and fireproof nozzle for the injection and/or casting of liquid metalsExpiredFeb 03, 99Apr 17, 01[B22D]
6210629 Method and device for discontinuous parting off of molten massExpiredApr 08, 99Apr 03, 01[C21B]
6156446 Ceramic composite structure and process for the production thereofExpiredMar 29, 99Dec 05, 00[B32B]
6148903 Method for the inductive heating of a refractory mold part as well as corresponding mold part for suchExpiredFeb 24, 99Nov 21, 00[B22D]
6092701 Fireproof plate and a clamping device for a sliding gate at the outlet of a vessel containing molten metalExpiredFeb 05, 99Jul 25, 00[B22D]
6072166 Method of operating an inductorExpiredJun 30, 99Jun 06, 00[H05B]
6051822 Method of operating an inductorExpiredAug 28, 96Apr 18, 00[H05B]
6052403 Inductor in a fusion tankExpiredJun 04, 99Apr 18, 00[F27D]
6043472 Assembly of tapping device and inductor thereforExpiredApr 24, 98Mar 28, 00[H05B]
5958280 Immersion nozzle for pouring molten metal (joint point)ExpiredSep 09, 97Sep 28, 99[B22D]
5901776 Process for the inductive heating of a fireproof molding and a suitable molding thereforExpiredOct 10, 96May 11, 99[B22D]
5902509 Method and apparatus for inductively heating a refractory shaped memberExpiredJul 25, 96May 11, 99[H05B]
5837631 Molded silicon carbide bodiesExpiredNov 08, 96Nov 17, 98[C04B]
5788159 Method and apparatus for applying compositionsExpiredJul 25, 96Aug 04, 98[B05B]

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