Issued Patents All Time
Showing 1–14 of 14 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5238654 | Syringe drive with lead screw mechanism | Thomas J. McCall, Jr. | 1993-08-24 |
| 5044428 | Air powered heater/mixer | — | 1991-09-03 |
| 5010921 | Nonsymmetrical valve | — | 1991-04-30 |
| 4980130 | System for preparation of samples for analysis | Andre Metzger, Peter Grimm, Vance J. Nau | 1990-12-25 |
| 4957009 | Pushloop liquid sampling method | Landy B. White | 1990-09-18 |
| 4925628 | Sample preparation chamber with mixer/grinder and sample aliquot isolation | Andre Metzger, Peter Grimm, Vance J. Nau | 1990-05-15 |
| 4900683 | Process for preparation of samples for analysis | Andre Metzger, Peter Grimm, Vance J. Nau | 1990-02-13 |
| 4894345 | Process for preparation of samples for analysis | Andre Metzger, Peter Grimm, Vance J. Nau | 1990-01-16 |
| 4891137 | Method and apparatus for membrane extraction of hydrolysis contaminates | Ronald V. Perkins | 1990-01-02 |
| 4866996 | Sample metering valve for a sample preparation system | Vance J. Nau, Andre Metzger | 1989-09-19 |
| 4859605 | Process for preparation of samples for analysis | Andre Metzger, Peter Grimm, Vance J. Nau | 1989-08-22 |
| 4836037 | Sample metering valve for a sample preparation system | Vance J. Nau, Andre Metzger | 1989-06-06 |
| 4823622 | Sample metering valve for a sample preparation system | Vance J. Nau, Andre Metzger | 1989-04-25 |
| 4792434 | Sample preparation chamber with mixer/grinder and sample aliquot isolation | Andre Metzger, Peter Grimm, Vance J. Nau | 1988-12-20 |