Issued Patents All Time
Showing 1–19 of 19 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8535410 | Blast furnace cooling method to increase steel production and reduce cost in a basic oxygen furnace | — | 2013-09-17 |
| 7531046 | Process for de-oiling steelmaking sludges and wastewater streams | — | 2009-05-12 |
| 6871745 | Distributor apparatus for providing a uniform discharge of material | Alvin M. Nestler, Nazareno M. Medei | 2005-03-29 |
| 6514312 | Steelmaking slag conditioner and method | Colvin W. Smith, Richard V. Fekete | 2003-02-04 |
| 6387175 | Roadway base intermediate, roadway base, and methods of manufacture | Leah M. Burge, Douglas J. Koutek, John L. Sullivan | 2002-05-14 |
| 6383250 | Steel making revert and process for preparing | Colvin W. Smith | 2002-05-07 |
| 6241805 | Method and system for improving the efficiency of a basic oxygen furnace | Colvin W. Smith | 2001-06-05 |
| 6238443 | Process of agglomerating high carbon dusts and a substantially non-dusting high carbon composition therefrom | Colvin W. Smith, Marvin S. Stern | 2001-05-29 |
| 6136066 | Method of recycling iron-bearing waste material back into a basic oxygen furnace | Colvin W. Smith, Glenn C. Keyser | 2000-10-24 |
| 6126714 | Revert manufactured from iron-bearing waste material | Colvin W. Smith, Glenn C. Keyser | 2000-10-03 |
| 6007601 | Lime enhanced pressure filtration of iron and steel making sludge | — | 1999-12-28 |
| 5785737 | Method for recycling iron bearing sludges in a steelmaking operation | Colvin W. Smith, Glenn C. Keyser | 1998-07-28 |
| 5568896 | Methods for preparing pulpwood for digestion | James E. Adams, Jr., Ravindran Nadarajah | 1996-10-29 |
| 5435835 | Method and system for removing and/or causing recycling of materials | Thomas H. Weidner, Elmer D. Anderson, II | 1995-07-25 |
| 5259697 | Composition and process for forming low permeability barriers for waste disposal sites | Robert B. Allen, Charles E. Jablonski, Thomas H. Weidner | 1993-11-09 |
| 4911757 | Process for chemical stabilization of heavy metal bearing dusts and sludges | Charles E. Jablonski, Walter D. Egan | 1990-03-27 |
| 4840671 | Process for chemical stabilization of heavy metal bearing dusts and sludges as EAF dust | Charles E. Jablonski, Walter D. Egan | 1989-06-20 |
| 4425228 | Wet-classifying method for recovery of carbon and iron-bearing particles | R. Donald Bartusiak | 1984-01-10 |
| 4209313 | Method for controlling noxious gases formed during granulation of molten slag | Gerald N. Carrick | 1980-06-24 |