Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6322752 | Method and apparatus for aspirating and dispensing liquids | Imran T. Siddiqui, Roberto Del Valle, Santos E. Vargas | 2001-11-27 |
| 5255568 | Liquid sample/reagent metering and delivery method | Roberto Del Valle, Santos E. Vargas | 1993-10-26 |
| 5158751 | Liquid metering and transfer valve assembly | Roberto Del Valle, Santos E. Vargas | 1992-10-27 |
| 4896546 | Liquid metering and transfer valve assembly | Daniel Estoque | 1990-01-30 |
| 4702889 | Liquid sampling valve | Humberto Berra, Edward N. Doty | 1987-10-27 |
| 4653719 | Fluid conduit and pinch valve for use therewith | Glenn D. Talbot | 1987-03-31 |
| 4507977 | Liquid metering and transfer valve assembly | — | 1985-04-02 |
| 4445391 | Liquid metering and transfer valve assembly | — | 1984-05-01 |
| 4387076 | Sample feeding arrangement | Glenn D. Talbot, Larry C. Carman | 1983-06-07 |
| 4220621 | Backwash system for diluting apparatus | Ronald O. Simpson | 1980-09-02 |