Issued Patents All Time
Showing 1–20 of 20 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7767190 | Inhibiting the formation of TCA in a Bayer causticisation process | Darrel J. Wilson, Catherine A. Heath | 2010-08-03 |
| 7691348 | Process for the removal of anionic impurities from caustic aluminate solutions | Wayne Tichbon, Alex R. Aboagye, Catherine A. Heath, Darrel J. Wilson | 2010-04-06 |
| 7666373 | Alumina recovery using aluminum containing layered double hydroxide | — | 2010-02-23 |
| 7244404 | Process for the removal of oxalate and/or sulphate from bayer liquors | Wayne Tichbon, Darrel J. Wilson, Catherine A. Heath | 2007-07-17 |
| 7192568 | Process for filter aid production in alumina refineries | Darrel J. Wilson | 2007-03-20 |
| 6743403 | Process for the removal of oxalate and/or sulphate from Bayer liquors | Wayne Tichbon, Darrel J. Wilson, Catherine A. Heath | 2004-06-01 |
| 6676910 | Processes for the causticisation of Bayer liquors in an alumina refinery | Darrel J. Wilson, Catherine A. Heath | 2004-01-13 |
| 6555077 | Organic impurity removal process for bayer liquors | Wayne Tichbon, Steven J. Healy | 2003-04-29 |
| 6306333 | Process for making cellulose ethers having reduced yellowing and discoloration | Michael V. Spencer, Gary J. Schulz | 2001-10-23 |
| 5356584 | Polybenzazole fibers with ultra-high physical properties and method for making them | Robert A. Bubeck, Chieh-Chun Chau, Stephen J. Nolan, Mark D. Newsham, Myrna Serrano | 1994-10-18 |
| 5294390 | Method for rapid spinning of a polybenzazole fiber | George J. Quarderer, Ashish Sen, Masaru Nakagawa, Timothy L. Faley, Myrna Serrano +2 more | 1994-03-15 |
| 5288445 | Rapid heat-treatment method for polybenzaole fiber | Katsuya Tani, Willard E. Alexander, Chieh-Chun Chau | 1994-02-22 |
| 5286833 | Polybenzazole fiber with ultra-high physical properties | Robert A. Bubeck, Stephen J. Nolan, Chieh-Chun Chau, Mark D. Newsham, Myrna Serrano | 1994-02-15 |
| 5276128 | Salts of polybenzazole monomers and their use | Richard C. Krauss, Ming-Biann Liu, Luke R. Kleiss | 1994-01-04 |
| 5233014 | Rapid advancement of molecular weight in polybenzazole oligomer dopes | Thomas D. Gregory, Carl W. Hurtig, Harvey D. Ledbetter, Kenneth J. Quackenbush | 1993-08-03 |
| 5219981 | Semi-continuous process for synthesis of polybenzazole polymers | Thomas D. Gregory, Carl W. Hurtig, Harvey D. Ledbetter, Kenneth J. Quackenbush | 1993-06-15 |
| 5194568 | Staged polymerization of polybenzazole polymers | Thomas D. Gregory, Carl W. Hurtig, Harvey D. Ledbetter, Kenneth J. Quackenbush, Ying H. So | 1993-03-16 |
| 5142021 | Use of reducing agents in polybenzazole synthesis | Zenon Lysenko, William J. Harris | 1992-08-25 |
| 5138020 | Phosphate salts of monomers for PBZ and their use in preparing PBZ polymers | William J. Harris, Ming-Biann Liu, Luke R. Kleiss, Zenon Lysenko | 1992-08-11 |
| 5089591 | Rapid advancement of molecular weight in polybenzazole oligomer dopes | Thomas D. Gregory, Carl W. Hurtig, Harvey D. Ledbetter, Kenneth J. Quackenbush | 1992-02-18 |