Issued Patents All Time
Showing 1–25 of 36 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12385692 | Process and apparatus for improved recovery of argon | Jay A. Thakkar, Qiao Zhao | 2025-08-12 |
| 12298075 | Process and apparatus for recovery of at least nitrogen and argon | Qiao Zhao | 2025-05-13 |
| 12287145 | Heat exchanger apparatus, manifold arrangement for a heat exchanger apparatus, and methods relating to same | Fang Xu, Xukun Luo, Douglas Paul Dee, William T. Kleinberg | 2025-04-29 |
| 12179143 | Flue gas decarbonization | Mozhgan Alimohammadi Zanjani, David Ross Graham, Donald E. Henry, Roger Anthony Dewing | 2024-12-31 |
| 11460246 | Recovery of krypton and xenon from liquid oxygen | Xukun Luo, Alan D. Berger | 2022-10-04 |
| 11054182 | Process and apparatus for separating air using a split heat exchanger | Qiao Zhao | 2021-07-06 |
| 9708188 | Method for argon production via cold pressure swing adsorption | Shubhra Jyoti Bhadra, Roger Dean Whitley, Garret Chi-Ho Lau, David Ross Graham, Qiao Zhao +1 more | 2017-07-18 |
| 9630123 | Liquid distributor with a mixer | Swaminathan Sunder, Patrick Alan Houghton | 2017-04-25 |
| 8601833 | System to cold compress an air stream using natural gas refrigeration | Douglas Paul Dee, Jung Soo Choe | 2013-12-10 |
| 8132411 | Rankine cycle for LNG vaporization/power generation process | Jianguo Xu | 2012-03-13 |
| 7712331 | System to increase capacity of LNG-based liquefier in air separation process | Douglas Paul Dee, Jung Soo Choe | 2010-05-11 |
| 7552599 | Air separation process utilizing refrigeration extracted from LNG for production of liquid oxygen | Jung Soo Choe, Douglas Paul Dee | 2009-06-30 |
| 7501009 | Combined cryogenic distillation and PSA for argon production | David Ross Graham, Justin David Bukowski, Jung Soo Choe, Sang Kook Lee | 2009-03-10 |
| 6662593 | Process and apparatus for the cryogenic separation of air | Paul Higginbotham, Rakesh Agrawal, Adam Adrian Brostow, Kelvin Graham Hayes, Declan Patrick O'Connor | 2003-12-16 |
| 6484516 | Method and system for cryogenic refrigeration | Rakesh Agrawal, Zbigniew Tadeusz Fidowski, William Curtis Kottke | 2002-11-26 |
| 6298688 | Process for nitrogen liquefaction | Adam Adrian Brostow, Rakesh Agrawal, Mark Julian Roberts | 2001-10-09 |
| 6263701 | Process for the purification of a major component containing light and heavy impurities | Rakesh Agrawal | 2001-07-24 |
| 6253576 | Process for the production of intermediate pressure oxygen | Adam Adrian Brostow | 2001-07-03 |
| 6240744 | Process for distillation of multicomponent fluid and production of an argon-enriched stream from a cryogenic air separation process | Rakesh Agrawal, Jung Soo Choe | 2001-06-05 |
| 6233970 | Process for delivery of oxygen at a variable rate | Oliver Jacob Smith, IV | 2001-05-22 |
| 6227005 | Process for the production of oxygen and nitrogen | Paul Higginbotham, Rakesh Agrawal | 2001-05-08 |
| 6009723 | Elevated pressure air separation process with use of waste expansion for compression of a process stream | Zbigniew Tadeusz Fidkowski | 2000-01-04 |
| 5970743 | Production of argon from a cryogenic air separation process | Stephen J. Cook, Rakesh Agrawal | 1999-10-26 |
| 5966967 | Efficient process to produce oxygen | Rakesh Agrawal, Yanping Zhang | 1999-10-19 |
| 5956973 | Air separation with intermediate pressure vaporization and expansion | Rakesh Agrawal | 1999-09-28 |