Issued Patents All Time
Showing 101–113 of 113 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4956793 | Method and apparatus for measuring the density of fluids | Steven D. James | 1990-09-11 |
| 4944035 | Measurement of thermal conductivity and specific heat | Roger L. Aagardl, Robert J. Matthys | 1990-07-24 |
| 4915838 | Membrane dehumidification | David W. Deetz, Juey H. Lai, David J. Odde, J. David Zook | 1990-04-10 |
| 4913647 | Air fuel ratio control | Brian C. Krafthefer | 1990-04-03 |
| 4900448 | Membrane dehumidification | David W. Deetz, Juey H. Lai, David J. Odde, J. David Zook | 1990-02-13 |
| 4587105 | Integratable oxygen sensor | Robert G. Johnson | 1986-05-06 |
| 4568266 | Fuel-to-air ratio control for combustion systems | — | 1986-02-04 |
| 4561263 | Refrigeration or heat pump system defrost | — | 1985-12-31 |
| 4527085 | High voltage spark electrode structure | John E. Bohan, Jr., Dane Weber | 1985-07-02 |
| 4507558 | Selective leak-detector for natural gas | — | 1985-03-26 |
| 4497438 | Adaptive, modulating boiler control system | — | 1985-02-05 |
| 4441335 | Heat pump | — | 1984-04-10 |
| 4251025 | Furnace control using induced draft blower and exhaust stack flow rate sensing | Lorne W. Nelson, Ralph H. Torborg | 1981-02-17 |