Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6858198 | Method for regulating water concentration in a process stream | Troy W. Francisco, Kenneth E. Creasy, John L. Welch, William A. Pepe | 2005-02-22 |
| 6670281 | HF etching and oxide scale removal | Matthew H. Luly, Rajiv R. Singh, Jeffrey Warren McKown, Robert Pratt | 2003-12-30 |
| 5766483 | Process for hydrogen fluoride separation | Mathew Hermes Luly, Jeffrey Warren McKown, Robert Pratt, Rajiv R. Singh, Paul F. Kunkel +1 more | 1998-06-16 |
| 5663474 | Alkylation process using hydrogen fluoride-containing alkylation catalysts | Hang T. Pham, Robert Pratt, John James Thompson, Michael Van Der Puy, Rajiv R. Singh +4 more | 1997-09-02 |
| 5449503 | Process for separating arsenic acid from an aqueous mixture comprising sulfuric and arsenic acids | Somanahalli N. Subbanna, Robert A. Smith | 1995-09-12 |
| 5089241 | Process for converting hexafluoroarsenic acid or any salt thereof to arsenic acid or salt thereof which can then be rendered nonhazardous | Robert A. Smith, Douglas G. Frick, Somanahalli N. Subbanna | 1992-02-18 |
| 4929435 | Manufacture of high purity low arsenic anhydrous hydrogen fluoride | Barry J. Boghean, Somanahalli N. Subbanna, Christian A. Wamser | 1990-05-29 |