Issued Patents All Time
Showing 1–21 of 21 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11795260 | Bulk material comprising solid diisocyanates and prepolymers containing urethane groups obtainable therefrom | Michael Merkel, Anna-Marie Zorn, Rainer Bellinghausen, Pascal Scherpian | 2023-10-24 |
| 10307727 | Method for processing hydrogen chloride from isocyanate preparation | Martin Ehrig, Johannes Leonhäuser, Dirk Weiβenberg | 2019-06-04 |
| 10294198 | Method for producing xylylene diisocyanates in the gaseous phase | Reinhard Halpaap, Josef Sanders, Frank Richter, Elsa Karoline Schadlich, Armin Schymura +3 more | 2019-05-21 |
| 9422162 | Carbon nanotube agglomerate | Heiko Hocke, Elmar Bramer-Weger | 2016-08-23 |
| 8398949 | Carbon nanotube powder, carbon nanotubes, and processes for their production | Helmut Meyer, Heiko Hocke, Martin Schmid, Elmar Bramer-Weger, Matthias Voetz +4 more | 2013-03-19 |
| 7425234 | Iron oxide pigments | Leslaw Mleczko, Ulrich Meisen, Georg Lamp | 2008-09-16 |
| 6322745 | Direct smelting vessel and direct smelting process | David Leigh, Peter Damian Burke, Cecil Peter Bates | 2001-11-27 |
| 5571475 | Reducing and smelting furnace having filter layer | — | 1996-11-05 |
| 5403378 | Method and apparatus for protecting an injection device disposed in a hot blast conduit of a blast furnace | William Wells | 1995-04-04 |
| 5364448 | Process for the production of liquid metal from fine-grain metal oxide particles and reducing and smelting furnace for carrying out the process | — | 1994-11-15 |
| 4949940 | Charging arrangement for shaft furnaces, in particular blast furnaces | — | 1990-08-21 |
| 4946498 | Process for the production of steel from fine ore hot briquetted after fluidized bed reduction | — | 1990-08-07 |
| 4881972 | Process for feeding heat energy into a molten metal bath | William Wells | 1989-11-21 |
| 4852858 | Charging material preheater for preheating charging material for a metallurgical smelting unit | — | 1989-08-01 |
| 4736930 | Closure apparatus for a tap hole | William Wells | 1988-04-12 |
| 4586897 | Installation including a heating furnace for continuous castings, which are cut to length, from a continuous casting installation | Herbert Rothe | 1986-05-06 |
| 4448402 | Apparatus for directly making liquid pig-iron from coarse iron ore | Bernt Rollinger, Rolf Hauk, Michael J. Nagle, Jr., Bernhard Rinner | 1984-05-15 |
| 4409023 | Process for directly making liquid pig-iron from coarse iron ore | Bernt Rollinger, Rolf Hauk, Michael Nagl, Bernhard Rinner | 1983-10-11 |
| 4392637 | Metallurgical melting apparatus with a blow-nozzle or burner capable of swivelling in different directions | Bernt Rollinger, Michael Nagl, Bernhard Rinner | 1983-07-12 |
| 4389043 | Metallurgical melting and refining unit | William Wells | 1983-06-21 |
| 4317677 | Process for producing liquid crude iron and reduction gas | Emil Elsner, Walter Maschlanka, Bernt Rollinger, Gerhard Sanders | 1982-03-02 |