Issued Patents All Time
Showing 1–19 of 19 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8267685 | Method of mixing high temperature gases in mineral processing kilns | Eric R. Hansen, Ralph A. Supelak, Peter F. Way | 2012-09-18 |
| 7959435 | Method and apparatus for reducing NOx emissions in rotary kilns by SNCR | Eric R. Hansen, Kenneth J. Derksen, Kevin Blankenship, Walter Parker, Ralph A. Supelak | 2011-06-14 |
| 7488172 | Methods of mixing high temperature gases in mineral processing kilns | Eric R. Hansen, Ralph A. Supelak | 2009-02-10 |
| 7229281 | Method of mixing high temperature gases in mineral processing kilns | Eric R. Hansen, Ralph A. Supelak | 2007-06-12 |
| 6672865 | Method of mixing high temperature gases in mineral processing kilns | Eric R. Hansen, Ralph A. Supelak, Peter F. Way | 2004-01-06 |
| 6345981 | Controlled solid fuel thermolysis in preheater/precalciner kilns | Eric R. Hansen | 2002-02-12 |
| 6050203 | Method for use of solid waste as fuel for cement manufacture | Theodore J. Reese, Eric R. Hansen, Michel R. Benoit | 2000-04-18 |
| 5816795 | Apparatus and method for providing supplemental fuel to a preheater/precalciner kiln | Eric R. Hansen, Theodore J. Reese | 1998-10-06 |
| 5649823 | Apparatus for improved manufacture of cement in long kilns | — | 1997-07-22 |
| 5632616 | Method and apparatus for injecting air into long cement kilns | Eric R. Hansen, Michael P. Heap | 1997-05-27 |
| 5569030 | Method for improved manufacture of cement in long kilns | Eric R. Hansen | 1996-10-29 |
| 5549058 | Method and apparatus for charging a bulk material supplemental fuel into a long cement kiln | — | 1996-08-27 |
| 5454715 | Method for improved manufacture of cement in long kilns | Eric R. Hansen | 1995-10-03 |
| 5451255 | Method for improved manufacture of cement in long kilns | Eric R. Hansen | 1995-09-19 |
| 5375535 | Method and apparatus for improved manufacture of cement in long kilns | — | 1994-12-27 |
| 5339751 | Apparatus and method for charging combustible solids into a rotary kiln | — | 1994-08-23 |
| 5226774 | Device for charging combustible solids to rotary kilns | Michel R. Benoit | 1993-07-13 |
| 5078594 | Device for charging combustible solids to rotary kilns | Michel R. Benoit | 1992-01-07 |
| 4930965 | Apparatus for charging solid fuel to rotary kilns | Charles Peterson, John Cody | 1990-06-05 |