Issued Patents All Time
Showing 1–19 of 19 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7666379 | Process and apparatus for removing Bronsted acid impurities in binary halides | Leisl Dukhedin-Lalla, German Shekk, John P. de Neufville | 2010-02-23 |
| 6315861 | Process for conditioning ozone gas recycle stream in ozone pulp bleaching | James Joseph, William H. Friend | 2001-11-13 |
| 6126781 | Process for conditioning ozone gas recycle stream in ozone pulp bleaching | James Joseph, William H. Friend | 2000-10-03 |
| 5989388 | Method for ozone bleaching of high consistency pulp in two stages | William H. Friend | 1999-11-23 |
| 5863389 | Pulp bleaching reactor for dispersing high consistency pulp into a gaseous bleaching agent containing ozone | David E. White, Thomas P. Gandck, William H. Friend | 1999-01-26 |
| 5693184 | Reduction of salt scale precipitation by control of process stream pH and salt concentration | Thomas P. Gandek, James Joseph, George Pangalos, Philip E. Bowden | 1997-12-02 |
| 5554259 | Reduction of salt scale precipitation by control of process stream Ph and salt concentration | Thomas P. Gandek, James Joseph, George Pangalos, Philip E. Bowden | 1996-09-10 |
| 5520783 | Apparatus for bleaching high consistency pulp with ozone | David E. White, Thomas P. Gandek, William H. Friend, Stuart Terry Jones | 1996-05-28 |
| 5472572 | Reactor for bleaching high consistency pulp with ozone | David E. White, Thomas P. Gandek, William H. Friend | 1995-12-05 |
| 5451296 | Two stage pulp bleaching reactor | William H. Friend | 1995-09-19 |
| 5441603 | Method for chelation of pulp prior to ozone delignification | Bruce F. Griggs, Thomas P. Gandek, Allen Rosen | 1995-08-15 |
| 5409570 | Process for ozone bleaching of oxygen delignified pulp while conveying the pulp through a reaction zone | Bruce F. Griggs, Thomas P. Gandek, Allen Rosen, Stuart T. Terrett, Spencer W. Eachus +3 more | 1995-04-25 |
| 5296099 | Environmentally improved process for bleaching lignocellulosic materials with oxygen, ozone and chlorine dioxide | Bruce F. Griggs, Thomas P. Gandek, Allen Rosen | 1994-03-22 |
| 5211811 | Process for high consistency oxygen delignification of alkaline treated pulp followed by ozone delignification | Bruce F. Griggs, Thomas P. Gandek, Allen Rosen | 1993-05-18 |
| 5188708 | Process for high consistency oxygen delignification followed by ozone relignification | Bruce F. Griggs, Thomas P. Gandek, Allen Rosen | 1993-02-23 |
| 5181989 | Reactor for bleaching high consistency pulp with ozone | David E. White, Thomas P. Gandek, William H. Friend | 1993-01-26 |
| 5174861 | Method of bleaching high consistency pulp with ozone | David E. White, Thomas P. Gandek, William H. Friend | 1992-12-29 |
| 5164043 | Environmentally improved process for bleaching lignocellulosic materials with ozone | Bruce F. Griggs, Thomas P. Gandek, Allen Rosen | 1992-11-17 |
| 5164044 | Environmentally improved process for bleaching lignocellulosic materials with ozone | Bruce F. Griggs, Thomas P. Gandek, Allen Rosen | 1992-11-17 |