| Patent Number |
Title Of Patent |
Date Issued |
| 4707244 |
Solid state sensor element |
November 17, 1987 |
| A solid state sensing element comprising a nonporous, structurally stable, electrically insulating substrate on which is disposed spaced apart pairs of electrodes for contact with moisture. A hygroscopic electrolytic material is located in close proximity to the electrodes as by coating |
| 4655900 |
Method for treating electrodes and improved electrochemical cell |
April 7, 1987 |
| An improved electrochemical cell is described which comprises at least one electrode having increased signal strength achieved by treating at least the working surface of the electrode with a coating of a polytetrafluoroethylene and a catalyst metal selected from the group consisting |
| 4650562 |
Reference electrode device |
March 17, 1987 |
| A normal pH sensitive glass electrode is deactivated by exposure to thermal treatments at relatively high temperatures of approximately 190.degree. C. for predetermined periods of time until the nominal electrode sensitivity is reduced to very low levels such that the output potentials o |
| 4485001 |
Sterilizable pH electrode and method for producing the same |
November 27, 1984 |
| A pH electrode which is capable of withstanding repeated exposures to sterilizing temperatures. An electrode body having a pH sensing member is at least partially filled with a bed of electrochemically inert particles. After an internal reference is inserted into the particle bed, the be |
| 4450064 |
Electrochemical gas sensor and method for producing the same |
May 22, 1984 |
| An improved method for producing an electrode assembly for use in electrochemical gas sensors. A plurality of conductors are attached to one surface of a generally circular electrode blank. These conductors are passed through respective conductor routing holes in an electrically nonc |
| 4410409 |
Amperometric gas sensor, cathode assembly therefor and method of making said cathode assembly |
October 18, 1983 |
| An improved electrode assembly for use in amperometric gas sensors. A portion of the interior of the electrode assembly that is adjacent to the electrode is filled with an electrochemically inert water-repellant fluid. Once the fluid is in place, a fluid barrier is inserted to cover the |
| 4379402 |
Gas analysis instrument having flow rate compensation |
April 12, 1983 |
| An apparatus for compensating for changes in the mass flow rate of a sample gas stream in gas analysis instruments having outputs that are calibrated in terms of the concentration of a component of the sample stream. In instruments in which a pressure regulated sample gas stream is appli |
| 4328082 |
Solid state ion-sensitive electrode and method of making said electrode |
May 4, 1982 |
| A solid state ion-sensitive measuring electrode is disclosed in which a filler solution comprising sodium silicate is provided between an outer glass membrane of the electrode and an internal metallic wire which serves as a conductor from the electrode to a meter. The filler solution is |
| 4272486 |
Interference reactor to provide selective SO.sub.2 measurement by fluorescent methodology |
June 9, 1981 |
| In a sulfur dioxide analyzer which measures the content of sulfur dioxide by fluorescence of sulfur dioxide molecules when illuminated by an ultraviolet light source, there is disclosed a converter containing vanadium pentoxide for removal of polynuclear aromatic hydrocarbons which p |
| 4231256 |
Thermoelectric gas dryer |
November 4, 1980 |
| A method and apparatus for removing moisture from a sample stream of gas while preventing dilution of the concentration of components of successive increments of the sample stream of gas. |
| 3934991 |
Nitric oxide analysis and scrubber therefor |
January 27, 1976 |
| A method of analyzing nitric oxide (NO) in a gas stream containing nitrogen dioxide (NO.sub.2) and a scrubber apparatus for selectively removing nitrogen dioxide from a gas stream containing nitric oxide. The scrubber apparatus comprises a container having an inlet port for the gas strea |
