Issued Patents All Time
Showing 1–21 of 21 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12297310 | Methods for chromium catalyst activation using oxygen-enriched fluidization gas | Ralph W. Romig, Troy Bretz, Zhihui Gu | 2025-05-13 |
| 12115506 | Catalyst slurry mixing process and system | Scott E. Kufeld | 2024-10-15 |
| 12076700 | Loop slurry reactor cooling processes and systems | Reza Khankal, Anurag Gupta, Enrique Mancillas, Timothy O. Odi | 2024-09-03 |
| 11833479 | Catalyst slurry mixing process and system | Scott E. Kufeld | 2023-12-05 |
| 11673975 | System and method for improving dump tank purge time | Bradley T. Price, Jamie N. Sutherland, Joseph A. Curren | 2023-06-13 |
| 11584806 | Methods for chromium catalyst activation using oxygen-enriched fluidization gas | Ralph W. Romig, Troy Bretz, Zhihui Gu | 2023-02-21 |
| 11578145 | System and method for rapid dump tank heating | Joseph A. Curren, Ralph W. Romig, Ai-Fu Chang | 2023-02-14 |
| 11254761 | Catalyst pretreatment and feeding system for polypropylene production | Reza Khankal, Joel A. Mutchler, Bryan M. Garner | 2022-02-22 |
| 11021549 | System and method for rapid dump tank heating | Joseph A. Curren, Ralph W. Romig, Ai-Fu Chang | 2021-06-01 |
| 9610558 | Energy efficient polyolefin process | Robert R. McElvain, John D. Hottovy, Ralph W. Romig, Donald W. Verser, David H. Burns +6 more | 2017-04-04 |
| 9221920 | Energy efficient polyolefin process | Robert R. McElvain, John D. Hottovy, Ralph W. Romig, Donald W. Verser, David H. Burns +6 more | 2015-12-29 |
| 8765884 | Energy efficient polyolefin process | Robert R. McElvain, John D. Hottovy, Ralph W. Romig, Donald W. Verser, David H. Burns +6 more | 2014-07-01 |
| 8569433 | Energy efficient polyolefin process | Robert R. McElvain, John D. Hottovy, Ralph W. Romig, Donald W. Verser, David H. Burns +6 more | 2013-10-29 |
| 8303899 | Energy efficient polyolefin process | Robert R. McElvain, John D. Hottovy, Ralph W. Romig, Donald W. Verser, David H. Burns +6 more | 2012-11-06 |
| 8128877 | Energy efficient polyolefin process | Robert R. McElvain, John D. Hottovy, Ralph W. Romig, Donald W. Verser, David H. Burns +6 more | 2012-03-06 |
| 8017701 | Energy efficient polyolefin process | Robert R. McElvain, John D. Hottovy, Ralph W. Romig, Donald W. Verser, David H. Burns +6 more | 2011-09-13 |
| 7999044 | System and method for deinventory of polymerization reactor | John D. Hottovy, John H. Tait, David H. Burns, Donald W. Verser | 2011-08-16 |
| 7179426 | Large catalyst activator | John D. Hottovy, Dale A. Zellers | 2007-02-20 |
| 6815511 | Continuous withdrawal from high solids slurry polymerization | Donald W. Verser, David H. Burns, George K. Rajaendran, John D. Hottovy | 2004-11-09 |
| 6753387 | Temperature controlling system for olefin polymerization reactors | John H. Tait, Rajinder Sharma, Gary A. Marek | 2004-06-22 |
| 6045661 | Process and apparatus for recovering diluent, monomer, and comonomer from a polymerization reactor effluent | Bruce E. Kreischer, Donald W. Verser | 2000-04-04 |