Issued Patents All Time
Showing 25 most recent of 31 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10390226 | Mobile identification method based on SIM card and device-related parameters | — | 2019-08-20 |
| 6301923 | Method for generating a cold gas | Dante Patrick Bonaquist, Arun Acharya | 2001-10-16 |
| 6250096 | Method for generating a cold gas | Dante Patrick Bonaquist, Arun Acharya | 2001-06-26 |
| 5463871 | Side column cryogenic rectification system for producing lower purity oxygen | — | 1995-11-07 |
| 5385024 | Cryogenic rectification system with improved recovery | Mark Julian Roberts | 1995-01-31 |
| 5303556 | Single column cryogenic rectification system for producing nitrogen gas at elevated pressure and high purity | James R. Dray, Mark Julian Roberts, Dante Patrick Bonaquist, Paul Louis Just, James Brian Mize +1 more | 1994-04-19 |
| 5237823 | Cryogenic air separation using random packing | Michael James Lockett, Richard A. Victor | 1993-08-24 |
| 5195324 | Cryogenic rectification system for producing nitrogen and ultra high purity oxygen | — | 1993-03-23 |
| 5161380 | Cryogenic rectification system for enhanced argon production | — | 1992-11-10 |
| 5098457 | Method and apparatus for producing elevated pressure nitrogen | Dante Patrick Bonaquist | 1992-03-24 |
| 5074898 | Cryogenic air separation method for the production of oxygen and medium pressure nitrogen | — | 1991-12-24 |
| 5069698 | Xenon production system | Michael Robert Couche, James R. Dray | 1991-12-03 |
| 4934148 | Dry, high purity nitrogen production process and system | Ravi Prasad, Oscar W. Haas | 1990-06-19 |
| 4902321 | Cryogenic rectification process for producing ultra high purity nitrogen | — | 1990-02-20 |
| 4822395 | Air separation process and apparatus for high argon recovery and moderate pressure nitrogen recovery | — | 1989-04-18 |
| 4780118 | Process and apparatus to produce ultra high purity oxygen from a liquid feed | — | 1988-10-25 |
| 4755202 | Process and apparatus to produce ultra high purity oxygen from a gaseous feed | — | 1988-07-05 |
| 4647299 | Process to produce an oxygen-free krypton-xenon concentrate | — | 1987-03-03 |
| 4604117 | Hybrid nitrogen generator with auxiliary column drive | — | 1986-08-05 |
| 4594085 | Hybrid nitrogen generator with auxiliary reboiler drive | — | 1986-06-10 |
| 4574006 | Process to produce a krypton-xenon concentrate from a liquid feed | — | 1986-03-04 |
| 4568528 | Process to produce a krypton-xenon concentrate and a gaseous oxygen product | — | 1986-02-04 |
| 4560398 | Air separation process to produce elevated pressure oxygen | Robert A. Beddome | 1985-12-24 |
| 4560397 | Process to produce ultrahigh purity oxygen | — | 1985-12-24 |
| 4453957 | Double column multiple condenser-reboiler high pressure nitrogen process | Ravindra F. Pahade, John H. Ziemer | 1984-06-12 |