Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9988483 | Pyrrolidine-based catalysts for use in polyurethane materials | Robert A. Grigsby, Jr., Eugene P. Wiltz, Jr., Ernest L. Rister, Jr., Frank Rodriguez, Howard P. Klein | 2018-06-05 |
| 9719007 | Alkylated polyetheramines as clay stabilizing agents | Marek K. Pakulski | 2017-08-01 |
| 8664448 | Process for the production and purification of propylene glycol | Srinivasa S. Godavarthy, Wei-Yang Su, Ralph M. DiGuilio, Stan Harville | 2014-03-04 |
| 8546620 | Ethylene glycol removal of residual glycol impurities | Haibo Zhao, Wenjin Zhang | 2013-10-01 |
| 8143461 | Maleic anhydride catalyst and method for its preparation | — | 2012-03-27 |
| 7816481 | Polyether polyamine agents and mixtures thereof | Howard P. Klein, Bruce L. Burton, David C. Alexander, Terry L. Renken, Chris E. Godinich | 2010-10-19 |
| 7683007 | Advances in amination catalysis | Terry L. Renken | 2010-03-23 |
| 7550550 | Polyether polyamine agents and mixtures therefor | Howard P. Klein, Bruce L. Burton, David C. Alexander, Terry L. Renken, Chris E. Godinich | 2009-06-23 |
| 7196033 | Advances in amination catalysis | Terry L. Renken | 2007-03-27 |
| 5260495 | Monoalkylene glycol production using highly selective monoalkylene glycol catalysts | — | 1993-11-09 |