Assignee
DIDIER WERKE AG
DE·199 granted patents·1,908 citations·filing 1975–2001
Top patents by PatentIndex Score
199 records- 0192US5552213ARefractory fiber structuresDIDIER WERKE AG·Filed 1994·Granted Sep 3, 1996·62 cites·6 claims
- 0291US5346868AInorganic fiberDIDIER WERKE AG·Filed 1993·Granted Sep 13, 1994·67 cites·13 claims
- 0390US4737326ARefractory shapes of ceramic fiber-containing materialDIDIER WERKE AG·Filed 1985·Granted Apr 12, 1988·74 cites·12 claims
- 0489US4179046ARefractory plate for slide closures of metallurgical vesselsDIDIER WERKE AG·Filed 1978·Granted Dec 18, 1979·25 cites·15 claims
- 0585US4182466AWear part for sliding gates and process for the production of such wear parts and sliding gate with such wear partsDIDIER WERKE AG·Filed 1977·Granted Jan 8, 1980·26 cites·14 claims
- 0682US4365731ARefractory structuresDIDIER WERKE AG·Filed 1980·Granted Dec 28, 1982·22 cites·28 claims
- 0780US4508324AFastening means for a closure plate on a sliding shutter outlet in a vessel which contains molten metalDIDIER WERKE AG·Filed 1983·Granted Apr 2, 1985·17 cites·27 claims
- 0879US5902509AMethod and apparatus for inductively heating a refractory shaped memberDIDIER WERKE AG·Filed 1996·Granted May 11, 1999·20 cites·138 claims
- 0979US4677731AProcess and device for mounting porous ceramic materialDIDIER WERKE AG·Filed 1985·Granted Jul 7, 1987·19 cites·15 claims
- 1079US4327847ASliding gate nozzlesDIDIER WERKE AG·Filed 1978·Granted May 4, 1982·14 cites·9 claims
- 1176US5420087ARefractory or fireproof brick as tin bath bottom brickDIDIER WERKE AG·Filed 1994·Granted May 30, 1995·33 cites·11 claims
- 1276US4895821AProcess for the manufacture of catalytic elements and catalytic elements so producedDIDIER WERKE AG·Filed 1988·Granted Jan 23, 1990·33 cites·24 claims
- 1376US4710480AMethod of ceramic molding which produces a porosity gradient and the manufacture of compound moldings using this methodDIDIER WERKE AG·Filed 1985·Granted Dec 1, 1987·31 cites·15 claims
- 1476US4545568AUnfired refractory structural member in the form of a plate for use as an expendable lining of metallurgical vesselsDIDIER WERKE AG·Filed 1984·Granted Oct 8, 1985·17 cites·17 claims
- 1575US6352951B1Refractory material based on chromium corundum, a chromium corundum brick and the use of said brickDIDIER WERKE AG·Filed 1998·Granted Mar 5, 2002·40 cites·13 claims
- 1675US4762689ACombination of retaining module and catalyst platesDIDIER WERKE AG·Filed 1986·Granted Aug 9, 1988·33 cites·18 claims
- 1775US4555050AClosure mechanism with gas sealDIDIER WERKE AG·Filed 1983·Granted Nov 26, 1985·13 cites·8 claims
- 1875US4086052ACeramic burner for combustion chamber for hot-blast stoveDIDIER WERKE AG·Filed 1976·Granted Apr 25, 1978·18 cites·17 claims
- 1974US5173199AApparatus for use in replacing a worn pouring pipe and for adjusting molten metal flow through a pouring pipeDIDIER WERKE AG·Filed 1991·Granted Dec 22, 1992·14 cites·27 claims
- 2074US4835123AMagnesia partially-stabilized zirconiaDIDIER WERKE AG·Filed 1988·Granted May 30, 1989·27 cites·18 claims
- 2174US4331471AMethod and device for installing and replacing a gas permeable insert in the wall of a vessel and for the introduction of gas therethroughDIDIER WERKE AG·Filed 1981·Granted May 25, 1982·12 cites·54 claims
- 2273US6210629B1Method and device for discontinuous parting off of molten massDIDIER WERKE AG·Filed 1997·Granted Apr 3, 2001·15 cites·20 claims
- 2373US5054664AInductively heatable refractory member, inductive coil employable therewith, and process for use thereofDIDIER WERKE AG·Filed 1990·Granted Oct 8, 1991·11 cites·22 claims
- 2472US5102055AApparatus and process for disintegrating a fiber agglomerateDIDIER WERKE AG·Filed 1991·Granted Apr 7, 1992·30 cites·18 claims
- 2572US5092500ARefractory discharge device with separate external reinforcement memberDIDIER WERKE AG·Filed 1991·Granted Mar 3, 1992·14 cites·20 claims
- 2671US4877013AHot blast stove installationDIDIER WERKE AG·Filed 1987·Granted Oct 31, 1989·14 cites·12 claims
- 2771US4290589ATeeming pipe for use at the outlet of a melt containerDIDIER WERKE AG·Filed 1980·Granted Sep 22, 1981·12 cites·32 claims
- 2870US4949886AHorizontal or vertical rotary valve for a metallurgical vesselDIDIER WERKE AG·Filed 1988·Granted Aug 21, 1990·10 cites·32 claims
- 2970US4913324ARotary valve for a metallurgical vessel and rotor and stator thereforDIDIER WERKE AG·Filed 1988·Granted Apr 3, 1990·10 cites·43 claims
- 3069US4735756AMethod for producing light-weight molded articles containing ceramic fibersDIDIER WERKE AG·Filed 1985·Granted Apr 5, 1988·26 cites·20 claims
- 3169US4566925AMethod of mounting a metal band about a cover plateDIDIER WERKE AG·Filed 1984·Granted Jan 28, 1986·12 cites·2 claims
- 3268US6487980B2Refractory ceramic plate and accompanying wall structure for an incineratorDIDIER WERKE AG·Filed 2001·Granted Dec 3, 2002·10 cites·18 claims
- 3368US5303905ARefractory ceramic stopper, apparatus for support thereof, and assembly thereofDIDIER WERKE AG·Filed 1992·Granted Apr 19, 1994·13 cites·65 claims
- 3468US4730754ARefractory immersion tube providing laminar flow of molten metalDIDIER WERKE AG·Filed 1987·Granted Mar 15, 1988·13 cites·10 claims
- 3568US4203538ARefractory spout brickDIDIER WERKE AG·Filed 1978·Granted May 20, 1980·9 cites·14 claims
- 3667US5139238ACeramic filters in refractory bodies for cleaning molten metalDIDIER WERKE AG·Filed 1991·Granted Aug 18, 1992·14 cites·35 claims
- 3767US4423833ARefractory immersion spoutDIDIER WERKE AG·Filed 1982·Granted Jan 3, 1984·11 cites·4 claims
- 3867US4174970ARefractory compositionDIDIER WERKE AG·Filed 1978·Granted Nov 20, 1979·15 cites·11 claims
- 3966US6409056B1Refractory productDIDIER WERKE AG·Filed 2000·Granted Jun 25, 2002·4 cites·5 claims
- 4066US4997362ACeramic burnerDIDIER WERKE AG·Filed 1990·Granted Mar 5, 1991·19 cites·25 claims
- 4166US4191528ATank blockDIDIER WERKE AG·Filed 1978·Granted Mar 4, 1980·13 cites·9 claims
- 4265US4829538AFurnace hearthDIDIER WERKE AG·Filed 1985·Granted May 9, 1989·11 cites·11 claims
- 4365US4728013ARefractory plate formed with expansion jointsDIDIER WERKE AG·Filed 1985·Granted Mar 1, 1988·10 cites·6 claims
- 4464US4911338ARefractory plate assembly including replaceable refractory erosion unitDIDIER WERKE AG·Filed 1985·Granted Mar 27, 1990·10 cites·37 claims
- 4563US4984769ATap spout for metallurgical vessels and method of repairingDIDIER WERKE AG·Filed 1989·Granted Jan 15, 1991·14 cites·21 claims
- 4663US4971295ASafety-type gas washing sink having improved heat dissipation propertiesDIDIER WERKE AG·Filed 1989·Granted Nov 20, 1990·9 cites·15 claims
- 4763US4640447AMolten metal immersion pouring spoutDIDIER WERKE AG·Filed 1984·Granted Feb 3, 1987·11 cites·12 claims
- 4863US4543893ALining brickDIDIER WERKE AG·Filed 1984·Granted Oct 1, 1985·13 cites·10 claims
- 4962US6217825B1Device and fireproof nozzle for the injection and/or casting of liquid metalsDIDIER WERKE AG·Filed 1997·Granted Apr 17, 2001·10 cites·61 claims
- 5062US5429283AImmersion nozzle formed of separate membersDIDIER WERKE AG·Filed 1994·Granted Jul 4, 1995·10 cites·23 claims
Showing the top 50 of 199 patent records by PatentIndex Score.
Join the waitlist — get patent alerts
Get an alert when DIDIER WERKE AG files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →