Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5291777 | System for monitoring oil well performance | Victor Chang, Cesar Alvarez | 1994-03-08 |
| 5260667 | Method and apparatus for determining the percentage water condent of oil in water emulsion by specific admittance measurement | Fernando Garcia-Golding, Mario Giallorenzo, Cesar Alvarez, Victor Chang | 1993-11-09 |
| 5245860 | Sensor for detection of oil leaks and oil quality in stuffing box of walking beam pump system | Victor Chang, Cesar Alvarez, Gianbattista Urbani | 1993-09-21 |