Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10184700 | Oil return system and method for active charge control in an air conditioning system | Ricardo Cruz | 2019-01-22 |
| 7987681 | Refrigerant fluid flow control device and method | — | 2011-08-02 |
| 6058719 | Heat pump apparatus having refrigerant level indication and associated methods | — | 2000-05-09 |
| 5771700 | Heat pump apparatus and related methods providing enhanced refrigerant flow control | — | 1998-06-30 |
| 5687578 | Heat pump apparatus and related methods producing enhanced refrigerant flow stability | — | 1997-11-18 |
| 5561985 | Heat pump apparatus including earth tap heat exchanger | — | 1996-10-08 |
| 5560220 | Method for testing an earth tap heat exchanger and associated apparatus | — | 1996-10-01 |
| 5274705 | Nonlinear processor for an echo canceller and method | Richard C. Younce | 1993-12-28 |
| 4831843 | Fluid flow control system | — | 1989-05-23 |
| 4665716 | Fluid flow control system | — | 1987-05-19 |
| 4573327 | Fluid flow control system | — | 1986-03-04 |
| 4255936 | Heat pump water heater | — | 1981-03-17 |