Inventor

Ernst Luhrsen

Inventor

Schwalbach, DE

Overview

27→

Patents

1980–1999

Patent span

Performing operations

Primary field (CPC B)

Patents· 27 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

B22Dprimary

B22DCasting of metals60%

C04BLime, magnesia16%

Y10TTechnical subjects covered by former us classification7%

Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests5%

B65DContainers for storage or transport of articles or materials, e.g. bags, barrels, bottles, boxes, cans, cartons, crates, drums, jars, tanks, hoppers, forwarding containers2%

F16KValves2%

H01GCapacitors2%

H01MProcesses or means, e.g. batteries, for the direct conversion of chemical energy into electrical energy2%

Y02EReduction of greenhouse gas [ghg] emissions, related to energy generation, transmission or distribution2%

PatentTitleYear

5,942,316'Multi-layer refractory wear body'1999 5,657,997'Fixing device for a ceramic sealing plate'1997 5,429,283'Immersion nozzle formed of separate members'1995 5,413,744'Process for inductive heating of ceramic shaped parts'1995 5,303,905'Refractory ceramic stopper, apparatus for support thereof, and assembly thereof'1994 5,190,716'Process for manufacturing and preheating a shaped ceramic part'1993 5,173,199'Apparatus for use in replacing a worn pouring pipe and for adjusting molten metal flow through a pouring pipe'1992 5,173,242'Means and method for forming a sealed connection'1992 5,171,495'Immersion nozzles for metal melts'1992 5,106,060'Components for forming a closing and/or regulating apparatus for tapping molten metal from a metallurgical vessel'1992 5,092,500'Refractory discharge device with separate external reinforcement member'1992 5,083,688'Rotary valve for a metallurgical vessel and rotor and stator therefor'1992 5,080,265'Apparatus for closing and/or regulating the tapping of molten metal'1992 5,072,864'Carbon-containing wearable refractory parts'1991 5,058,784'Closing and/or regulating apparatus for tapping molten metal from a metallurgical vessel'1991 5,037,017'Horizontal or vertical rotary valve for a metallurgical vessel'1991 5,025,961'Refractory shutoff assembly capable of improved emergency closing'1991 4,994,216'Process of making carbon-bonded refractory shaped articles'1991 4,949,886'Horizontal or vertical rotary valve for a metallurgical vessel'1990 4,923,225'Assembly for connecting a metal member to a ceramic refractory member'1990 4,913,324'Rotary valve for a metallurgical vessel and rotor and stator therefor'1990 4,717,128'Refractory plate assembly including wear and erosion resistant insert surrounded by plural component base structure'1988 4,634,685'Refractory article suitable for casting molten metal'1987 4,508,324'Fastening means for a closure plate on a sliding shutter outlet in a vessel which contains molten metal'1985 4,290,589'Teeming pipe for use at the outlet of a melt container'1981 4,268,015'Bottom outlet or discharge for use in metallurgical vessels for steel melts, particularly tundishes'1981 4,203,538'Refractory spout brick'1980

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1980–1999Patents assigned to DIDIER WERKE AG (27)· patent assignee history

1980–1999Based in Schwalbach, DE· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
DIDIER WERKE AG	27	1980–1999

Locations

Location	Patents	Span
Schwalbach, DE	27	1980–1999