Issued Patents All Time
Showing 26–50 of 57 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8709136 | Adsorption process | Kuo-Kuang Hsu, Jonathan James Berg, Edward Landis Weist, Jr. | 2014-04-29 |
| 8683825 | He-3 recovery from natural helium by distillation | David Ross Graham, Vipul S. Parekh | 2014-04-01 |
| 8671715 | He-3 recovery from natural helium by distillation | David Ross Graham, Vipul S. Parekh | 2014-03-18 |
| 8132411 | Rankine cycle for LNG vaporization/power generation process | Donn Michael Herron | 2012-03-13 |
| 7569294 | Modular portable battery charging system using hydrogen fuel cells | David Ross Graham, George Amir Meski, Robert Horninger | 2009-08-04 |
| 7354562 | Simultaneous shift-reactive and adsorptive process to produce hydrogen | David Hon Sing Ying, Shankar Nataraj, Jeffrey Raymond Hufton, Rodney John Allam, Sarah Jane Dulley | 2008-04-08 |
| 7108777 | Hydrogen-assisted electrolysis processes | Michael T. Kelly, Guido P. Pez, Ying Wu, Stefanie Sharp-Goldman | 2006-09-19 |
| 7083662 | Generation of elevated pressure gas mixtures by absorption and stripping | Xiang-Dong Peng, Harold H. Gunardson | 2006-08-01 |
| 6565628 | Pressure swing adsorption process with reduced pressure equalization time | David Lester Rarig, Tracey Ann Cook, Kuo-Kuang Hsu, Michelle Schoonover, Rakesh Agrawal | 2003-05-20 |
| 6551732 | Use of fuel cell cathode effluent in a fuel reformer to produce hydrogen for the fuel cell anode | — | 2003-04-22 |
| 6454838 | Six bed pressure swing adsorption process with four steps of pressure equalization | Edward Landis Weist, Jr. | 2002-09-24 |
| 6428607 | Pressure swing adsorption process which provides product gas at decreasing bed pressure | Mark Robert Pillarella, Douglas Paul Dee | 2002-08-06 |
| 6425938 | Single bed pressure swing adsorption process | Mark Robert Pillarella, Douglas Paul Dee, Rakesh Agrawal | 2002-07-30 |
| 6401767 | Apparatus and method for grounding compressed fuel fueling operator | Joseph Perry Cohen, David John Farese | 2002-06-11 |
| 6379431 | Pressure swing adsorption process with multiple beds on purge and/or with ten beds and four pressure equalization steps | Edward Landis Weist, Jr., David Lester Rarig, James Michael Occhialini, Mark Robert Pillarella | 2002-04-30 |
| 6263700 | Multieffect distillation for multicomponent separation | Rakesh Agrawal | 2001-07-24 |
| 5768914 | Process to produce oxygen and argon using divided argon column | Jeffrey A. Hopkins | 1998-06-23 |
| 5692395 | Separation of fluid mixtures in multiple distillation columns | Rakesh Agrawal | 1997-12-02 |
| 5678426 | Separation of fluid mixtures in multiple distillation columns | Rakesh Agrawal | 1997-10-21 |
| 5592832 | Process and apparatus for the production of moderate purity oxygen | Donn Michael Herron, Rakesh Agrawal | 1997-01-14 |
| 5513497 | Separation of fluid mixtures in multiple distillation columns | Rakesh Agrawal | 1996-05-07 |
| 5355681 | Air separation schemes for oxygen and nitrogen coproduction as gas and/or liquid products | — | 1994-10-18 |
| 5355682 | Cryogenic air separation process producing elevated pressure nitrogen by pumped liquid nitrogen | Rakesh Agrawal, Bruce K. Dawson, Jeffrey A. Hopkins | 1994-10-18 |
| 5341646 | Triple column distillation system for oxygen and pressurized nitrogen production | Rakesh Agrawal, Jeffrey S. Langston, Paul Rodgers | 1994-08-30 |
| 5306427 | Low pressure feed membrane separation process | — | 1994-04-26 |