| 6071481 |
Zero grade air generating system |
Loren T. Mathews, David R. Whineray |
2000-06-06 |
| 5753185 |
Vehicle emissions testing system |
Loren T. Mathews |
1998-05-19 |
| 5633170 |
Method and apparatus for nitrogen oxide analysis |
— |
1997-05-27 |
| 4990236 |
Thin film moisture sensing element |
Fred C. Sittler, Adrian C. Toy |
1991-02-05 |
| 4776942 |
Electrochemical sensor |
David H. Freund |
1988-10-11 |
| 4707244 |
Solid state sensor element |
John N. Harman, III |
1987-11-17 |
| 4655900 |
Method for treating electrodes and improved electrochemical cell |
John N. Harman, III |
1987-04-07 |
| 4575410 |
Solid state electrode system for measuring pH |
— |
1986-03-11 |
| 4485001 |
Sterilizable pH electrode and method for producing the same |
John N. Harman, III |
1984-11-27 |
| 4455213 |
Pressure equalization system for membrane type amperometric sensors |
Kenneth B. Sawa |
1984-06-19 |
| 4372915 |
Fluorescent sulfur dioxide analyzer having an improved sulfur dioxide generator |
Raymond E. Rocks |
1983-02-08 |
| 4328082 |
Solid state ion-sensitive electrode and method of making said electrode |
John N. Harman, III |
1982-05-04 |
| 4325912 |
Carbon monoxide detection apparatus |
Kenneth B. Sawa |
1982-04-20 |
| 4272248 |
Nitric oxide interference free sulfur dioxide fluorescence analyzer |
— |
1981-06-09 |
| 4268370 |
High temperature, CO.sub.2 interference free, electrochemical O.sub.2 sensor |
— |
1981-05-19 |