Issued Patents All Time
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8668768 | System for preventing contaminants from reaching a gas purifier | Michael Henry Hawke, Keith Randall Pace, Thomas John Bergman, Jr., Brian Donald Warrick, Sandro DiSanto +1 more | 2014-03-11 |
| 8343262 | System for preventing contaminants from reaching a gas purifier | Michael Henry Hawke, Keith Randall Pace, Thomas John Bergman, Jr., Brian Donald Warrick, Sandro Di Santo +1 more | 2013-01-01 |
| 8280554 | System for preventing unnecessary shutdown of a high-purity gas production plant | Thomas John Bergman, Jr., Rick L. Boyer, Sandro Di Santo, Michael Henry Hawke, Keith Randall Pace +1 more | 2012-10-02 |
| 7981195 | System for preventing contaminants from reaching a gas purifier | Michael Henry Hawke, Keith Randall Pace, Thomas John Bergman, Jr., Brian Donald Warrick, Sandro Di Santo +1 more | 2011-07-19 |
| 5452583 | Coolant recovery system | — | 1995-09-26 |
| 5390533 | Pressurizing with and recovering helium | Carl Joseph Heim, Vladimir T. Gorjaczkowski, Salvatore Giglia | 1995-02-21 |
| 5386707 | Withdrawal of cryogenic helium with low impurity from a vessel | Robert E. Goelz, Jr. | 1995-02-07 |
| 5377491 | Coolant recovery process | — | 1995-01-03 |
| 5344480 | Pressurizing with and recovering helium | Carl Joseph Heim, Vladimir T. Gorjaczkowski, Salvatore Giglia | 1994-09-06 |
| 4834178 | Process for injection of oxidant and liquid into a well | Peter Knecht, Raymond Francis Drnevich | 1989-05-30 |
| 4778010 | Process for injection of oxidant and liquid into a well | Peter Knecht, Raymond Francis Drnevich | 1988-10-18 |